/*!
 * Vue.js v2.4.4
 * (c) 2014-2017 Evan You
 * Released under the MIT License.
 */
(function(global, factory) {
	typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() : typeof define === 'function' && define.amd ? define(factory) : (global.Vue = factory());
} (this, (function() {
	'use strict';

	/*  */

	// these helpers produces better vm code in JS engines due to their
	// explicitness and function inlining
	function isUndef(v) {
		return v === undefined || v === null
	}

	function isDef(v) {
		return v !== undefined && v !== null
	}

	function isTrue(v) {
		return v === true
	}

	function isFalse(v) {
		return v === false
	}

	/**
 * Check if value is primitive
 */
	function isPrimitive(value) {
		return (typeof value === 'string' || typeof value === 'number' || typeof value === 'boolean')
	}

	/**
 * Quick object check - this is primarily used to tell
 * Objects from primitive values when we know the value
 * is a JSON-compliant type.
 */
	function isObject(obj) {
		return obj !== null && typeof obj === 'object'
	}

	var _toString = Object.prototype.toString;

	/**
 * Strict object type check. Only returns true
 * for plain JavaScript objects.
 */
	function isPlainObject(obj) {
		return _toString.call(obj) === '[object Object]'
	}

	function isRegExp(v) {
		return _toString.call(v) === '[object RegExp]'
	}

	/**
 * Check if val is a valid array index.
 */
	function isValidArrayIndex(val) {
		var n = parseFloat(val);
		return n >= 0 && Math.floor(n) === n && isFinite(val)
	}

	/**
 * Convert a value to a string that is actually rendered.
 */
	function toString(val) {
		return val == null ? '': typeof val === 'object' ? JSON.stringify(val, null, 2) : String(val)
	}

	/**
 * Convert a input value to a number for persistence.
 * If the conversion fails, return original string.
 */
	function toNumber(val) {
		var n = parseFloat(val);
		return isNaN(n) ? val: n
	}

	/**
 * Make a map and return a function for checking if a key
 * is in that map.
 */
	function makeMap(str, expectsLowerCase) {
		var map = Object.create(null);
		var list = str.split(',');
		for (var i = 0; i < list.length; i++) {
			map[list[i]] = true;
		}
		return expectsLowerCase ?
		function(val) {
			return map[val.toLowerCase()];
		}: function(val) {
			return map[val];
		}
	}

	/**
 * Check if a tag is a built-in tag.
 */
	var isBuiltInTag = makeMap('slot,component', true);

	/**
 * Check if a attribute is a reserved attribute.
 */
	var isReservedAttribute = makeMap('key,ref,slot,is');

	/**
 * Remove an item from an array
 */
	function remove(arr, item) {
		if (arr.length) {
			var index = arr.indexOf(item);
			if (index > -1) {
				return arr.splice(index, 1)
			}
		}
	}

	/**
 * Check whether the object has the property.
 */
	var hasOwnProperty = Object.prototype.hasOwnProperty;
	function hasOwn(obj, key) {
		return hasOwnProperty.call(obj, key)
	}

	/**
 * Create a cached version of a pure function.
 */
	function cached(fn) {
		var cache = Object.create(null);
		return (function cachedFn(str) {
			var hit = cache[str];
			return hit || (cache[str] = fn(str))
		})
	}

	/**
 * Camelize a hyphen-delimited string.
 */
	var camelizeRE = /-(\w)/g;
	var camelize = cached(function(str) {
		return str.replace(camelizeRE,
		function(_, c) {
			return c ? c.toUpperCase() : '';
		})
	});

	/**
 * Capitalize a string.
 */
	var capitalize = cached(function(str) {
		return str.charAt(0).toUpperCase() + str.slice(1)
	});

	/**
 * Hyphenate a camelCase string.
 */
	var hyphenateRE = /\B([A-Z])/g;
	var hyphenate = cached(function(str) {
		return str.replace(hyphenateRE, '-$1').toLowerCase()
	});

	/**
 * Simple bind, faster than native
 */
	function bind(fn, ctx) {
		function boundFn(a) {
			var l = arguments.length;
			return l ? l > 1 ? fn.apply(ctx, arguments) : fn.call(ctx, a) : fn.call(ctx)
		}
		// record original fn length
		boundFn._length = fn.length;
		return boundFn
	}

	/**
 * Convert an Array-like object to a real Array.
 */
	function toArray(list, start) {
		start = start || 0;
		var i = list.length - start;
		var ret = new Array(i);
		while (i--) {
			ret[i] = list[i + start];
		}
		return ret
	}

	/**
 * Mix properties into target object.
 */
	function extend(to, _from) {
		for (var key in _from) {
			to[key] = _from[key];
		}
		return to
	}

	/**
 * Merge an Array of Objects into a single Object.
 */
	function toObject(arr) {
		var res = {};
		for (var i = 0; i < arr.length; i++) {
			if (arr[i]) {
				extend(res, arr[i]);
			}
		}
		return res
	}

	/**
 * Perform no operation.
 * Stubbing args to make Flow happy without leaving useless transpiled code
 * with ...rest (https://flow.org/blog/2017/05/07/Strict-Function-Call-Arity/)
 */
	function noop(a, b, c) {}

	/**
 * Always return false.
 */
	var no = function(a, b, c) {
		return false;
	};

	/**
 * Return same value
 */
	var identity = function(_) {
		return _;
	};

	/**
 * Generate a static keys string from compiler modules.
 */
	function genStaticKeys(modules) {
		return modules.reduce(function(keys, m) {
			return keys.concat(m.staticKeys || [])
		},
		[]).join(',')
	}

	/**
 * Check if two values are loosely equal - that is,
 * if they are plain objects, do they have the same shape?
 */
	function looseEqual(a, b) {
		if (a === b) {
			return true
		}
		var isObjectA = isObject(a);
		var isObjectB = isObject(b);
		if (isObjectA && isObjectB) {
			try {
				var isArrayA = Array.isArray(a);
				var isArrayB = Array.isArray(b);
				if (isArrayA && isArrayB) {
					return a.length === b.length && a.every(function(e, i) {
						return looseEqual(e, b[i])
					})
				} else if (!isArrayA && !isArrayB) {
					var keysA = Object.keys(a);
					var keysB = Object.keys(b);
					return keysA.length === keysB.length && keysA.every(function(key) {
						return looseEqual(a[key], b[key])
					})
				} else {
					/* istanbul ignore next */
					return false
				}
			} catch(e) {
				/* istanbul ignore next */
				return false
			}
		} else if (!isObjectA && !isObjectB) {
			return String(a) === String(b)
		} else {
			return false
		}
	}

	function looseIndexOf(arr, val) {
		for (var i = 0; i < arr.length; i++) {
			if (looseEqual(arr[i], val)) {
				return i
			}
		}
		return - 1
	}

	/**
 * Ensure a function is called only once.
 */
	function once(fn) {
		var called = false;
		return function() {
			if (!called) {
				called = true;
				fn.apply(this, arguments);
			}
		}
	}

	var SSR_ATTR = 'data-server-rendered';

	var ASSET_TYPES = ['component', 'directive', 'filter'];

	var LIFECYCLE_HOOKS = ['beforeCreate', 'created', 'beforeMount', 'mounted', 'beforeUpdate', 'updated', 'beforeDestroy', 'destroyed', 'activated', 'deactivated'];

	/*  */

	var config = ({
		/**
   * Option merge strategies (used in core/util/options)
   */
		optionMergeStrategies: Object.create(null),

		/**
   * Whether to suppress warnings.
   */
		silent: false,

		/**
   * Show production mode tip message on boot?
   */
		productionTip: "development" !== 'production',

		/**
   * Whether to enable devtools
   */
		devtools: "development" !== 'production',

		/**
   * Whether to record perf
   */
		performance: false,

		/**
   * Error handler for watcher errors
   */
		errorHandler: null,

		/**
   * Warn handler for watcher warns
   */
		warnHandler: null,

		/**
   * Ignore certain custom elements
   */
		ignoredElements: [],

		/**
   * Custom user key aliases for v-on
   */
		keyCodes: Object.create(null),

		/**
   * Check if a tag is reserved so that it cannot be registered as a
   * component. This is platform-dependent and may be overwritten.
   */
		isReservedTag: no,

		/**
   * Check if an attribute is reserved so that it cannot be used as a component
   * prop. This is platform-dependent and may be overwritten.
   */
		isReservedAttr: no,

		/**
   * Check if a tag is an unknown element.
   * Platform-dependent.
   */
		isUnknownElement: no,

		/**
   * Get the namespace of an element
   */
		getTagNamespace: noop,

		/**
   * Parse the real tag name for the specific platform.
   */
		parsePlatformTagName: identity,

		/**
   * Check if an attribute must be bound using property, e.g. value
   * Platform-dependent.
   */
		mustUseProp: no,

		/**
   * Exposed for legacy reasons
   */
		_lifecycleHooks: LIFECYCLE_HOOKS
	});

	/*  */

	var emptyObject = Object.freeze({});

	/**
 * Check if a string starts with $ or _
 */
	function isReserved(str) {
		var c = (str + '').charCodeAt(0);
		return c === 0x24 || c === 0x5F
	}

	/**
 * Define a property.
 */
	function def(obj, key, val, enumerable) {
		Object.defineProperty(obj, key, {
			value: val,
			enumerable: !!enumerable,
			writable: true,
			configurable: true
		});
	}

	/**
 * Parse simple path.
 */
	var bailRE = /[^\w.$]/;
	function parsePath(path) {
		if (bailRE.test(path)) {
			return
		}
		var segments = path.split('.');
		return function(obj) {
			for (var i = 0; i < segments.length; i++) {
				if (!obj) {
					return
				}
				obj = obj[segments[i]];
			}
			return obj
		}
	}

	/*  */

	var warn = noop;
	var tip = noop;
	var formatComponentName = (null); // work around flow check
	{
		var hasConsole = typeof console !== 'undefined';
		var classifyRE = /(?:^|[-_])(\w)/g;
		var classify = function(str) {
			return str.replace(classifyRE,
			function(c) {
				return c.toUpperCase();
			}).replace(/[-_]/g, '');
		};

		warn = function(msg, vm) {
			var trace = vm ? generateComponentTrace(vm) : '';

			if (config.warnHandler) {
				config.warnHandler.call(null, msg, vm, trace);
			} else if (hasConsole && (!config.silent)) {
				console.error(("[Vue warn]: " + msg + trace));
			}
		};

		tip = function(msg, vm) {
			if (hasConsole && (!config.silent)) {
				console.warn("[Vue tip]: " + msg + (vm ? generateComponentTrace(vm) : ''));
			}
		};

		formatComponentName = function(vm, includeFile) {
			if (vm.$root === vm) {
				return '<Root>'
			}
			var name = typeof vm === 'string' ? vm: typeof vm === 'function' && vm.options ? vm.options.name: vm._isVue ? vm.$options.name || vm.$options._componentTag: vm.name;

			var file = vm._isVue && vm.$options.__file;
			if (!name && file) {
				var match = file.match(/([^/\\] + )\.vue$ / );
				name = match && match[1];
			}

			return ((name ? ("<" + (classify(name)) + ">") : "<Anonymous>") + (file && includeFile !== false ? (" at " + file) : ''))
		};

		var repeat = function(str, n) {
			var res = '';
			while (n) {
				if (n % 2 === 1) {
					res += str;
				}
				if (n > 1) {
					str += str;
				}
				n >>= 1;
			}
			return res
		};

		var generateComponentTrace = function(vm) {
			if (vm._isVue && vm.$parent) {
				var tree = [];
				var currentRecursiveSequence = 0;
				while (vm) {
					if (tree.length > 0) {
						var last = tree[tree.length - 1];
						if (last.constructor === vm.constructor) {
							currentRecursiveSequence++;
							vm = vm.$parent;
							continue
						} else if (currentRecursiveSequence > 0) {
							tree[tree.length - 1] = [last, currentRecursiveSequence];
							currentRecursiveSequence = 0;
						}
					}
					tree.push(vm);
					vm = vm.$parent;
				}
				return '\n\nfound in\n\n' + tree.map(function(vm, i) {
					return ("" + (i === 0 ? '---> ': repeat(' ', 5 + i * 2)) + (Array.isArray(vm) ? ((formatComponentName(vm[0])) + "... (" + (vm[1]) + " recursive calls)") : formatComponentName(vm)));
				}).join('\n')
			} else {
				return ("\n\n(found in " + (formatComponentName(vm)) + ")")
			}
		};
	}

	/*  */

	function handleError(err, vm, info) {
		if (config.errorHandler) {
			config.errorHandler.call(null, err, vm, info);
		} else {
			{
				warn(("Error in " + info + ": \"" + (err.toString()) + "\""), vm);
			}
			/* istanbul ignore else */
			if (inBrowser && typeof console !== 'undefined') {
				console.error(err);
			} else {
				throw err
			}
		}
	}

	/*  */
	/* globals MutationObserver */

	// can we use __proto__?
	var hasProto = '__proto__' in {};

	// Browser environment sniffing
	var inBrowser = typeof window !== 'undefined';
	var UA = inBrowser && window.navigator.userAgent.toLowerCase();
	var isIE = UA && /msie|trident/.test(UA);
	var isIE9 = UA && UA.indexOf('msie 9.0') > 0;
	var isEdge = UA && UA.indexOf('edge/') > 0;
	var isAndroid = UA && UA.indexOf('android') > 0;
	var isIOS = UA && /iphone|ipad|ipod|ios/.test(UA);
	var isChrome = UA && /chrome\/\d+/.test(UA) && !isEdge;

	// Firefox has a "watch" function on Object.prototype...
	var nativeWatch = ({}).watch;

	var supportsPassive = false;
	if (inBrowser) {
		try {
			var opts = {};
			Object.defineProperty(opts, 'passive', ({
				get: function get() {
					/* istanbul ignore next */
					supportsPassive = true;
				}
			})); // https://github.com/facebook/flow/issues/285
			window.addEventListener('test-passive', null, opts);
		} catch(e) {}
	}

	// this needs to be lazy-evaled because vue may be required before
	// vue-server-renderer can set VUE_ENV
	var _isServer;
	var isServerRendering = function() {
		if (_isServer === undefined) {
			/* istanbul ignore if */
			if (!inBrowser && typeof global !== 'undefined') {
				// detect presence of vue-server-renderer and avoid
				// Webpack shimming the process
				_isServer = global['process'].env.VUE_ENV === 'server';
			} else {
				_isServer = false;
			}
		}
		return _isServer
	};

	// detect devtools
	var devtools = inBrowser && window.__VUE_DEVTOOLS_GLOBAL_HOOK__;

	/* istanbul ignore next */
	function isNative(Ctor) {
		return typeof Ctor === 'function' && /native code/.test(Ctor.toString())
	}

	var hasSymbol = typeof Symbol !== 'undefined' && isNative(Symbol) && typeof Reflect !== 'undefined' && isNative(Reflect.ownKeys);

	/**
 * Defer a task to execute it asynchronously.
 */
	var nextTick = (function() {
		var callbacks = [];
		var pending = false;
		var timerFunc;

		function nextTickHandler() {
			pending = false;
			var copies = callbacks.slice(0);
			callbacks.length = 0;
			for (var i = 0; i < copies.length; i++) {
				copies[i]();
			}
		}

		// the nextTick behavior leverages the microtask queue, which can be accessed
		// via either native Promise.then or MutationObserver.
		// MutationObserver has wider support, however it is seriously bugged in
		// UIWebView in iOS >= 9.3.3 when triggered in touch event handlers. It
		// completely stops working after triggering a few times... so, if native
		// Promise is available, we will use it:
		/* istanbul ignore if */
		if (typeof Promise !== 'undefined' && isNative(Promise)) {
			var p = Promise.resolve();
			var logError = function(err) {
				console.error(err);
			};
			timerFunc = function() {
				p.then(nextTickHandler).
				catch(logError);
				// in problematic UIWebViews, Promise.then doesn't completely break, but
				// it can get stuck in a weird state where callbacks are pushed into the
				// microtask queue but the queue isn't being flushed, until the browser
				// needs to do some other work, e.g. handle a timer. Therefore we can
				// "force" the microtask queue to be flushed by adding an empty timer.
				if (isIOS) {
					setTimeout(noop);
				}
			};
		} else if (!isIE && typeof MutationObserver !== 'undefined' && (isNative(MutationObserver) ||
		// PhantomJS and iOS 7.x
		MutationObserver.toString() === '[object MutationObserverConstructor]')) {
			// use MutationObserver where native Promise is not available,
			// e.g. PhantomJS, iOS7, Android 4.4
			var counter = 1;
			var observer = new MutationObserver(nextTickHandler);
			var textNode = document.createTextNode(String(counter));
			observer.observe(textNode, {
				characterData: true
			});
			timerFunc = function() {
				counter = (counter + 1) % 2;
				textNode.data = String(counter);
			};
		} else {
			// fallback to setTimeout
			/* istanbul ignore next */
			timerFunc = function() {
				setTimeout(nextTickHandler, 0);
			};
		}

		return function queueNextTick(cb, ctx) {
			var _resolve;
			callbacks.push(function() {
				if (cb) {
					try {
						cb.call(ctx);
					} catch(e) {
						handleError(e, ctx, 'nextTick');
					}
				} else if (_resolve) {
					_resolve(ctx);
				}
			});
			if (!pending) {
				pending = true;
				timerFunc();
			}
			if (!cb && typeof Promise !== 'undefined') {
				return new Promise(function(resolve, reject) {
					_resolve = resolve;
				})
			}
		}
	})();

	var _Set;
	/* istanbul ignore if */
	if (typeof Set !== 'undefined' && isNative(Set)) {
		// use native Set when available.
		_Set = Set;
	} else {
		// a non-standard Set polyfill that only works with primitive keys.
		_Set = (function() {
			function Set() {
				this.set = Object.create(null);
			}
			Set.prototype.has = function has(key) {
				return this.set[key] === true
			};
			Set.prototype.add = function add(key) {
				this.set[key] = true;
			};
			Set.prototype.clear = function clear() {
				this.set = Object.create(null);
			};

			return Set;
		} ());
	}

	/*  */

	var uid = 0;

	/**
 * A dep is an observable that can have multiple
 * directives subscribing to it.
 */
	var Dep = function Dep() {
		this.id = uid++;
		this.subs = [];
	};

	Dep.prototype.addSub = function addSub(sub) {
		this.subs.push(sub);
	};

	Dep.prototype.removeSub = function removeSub(sub) {
		remove(this.subs, sub);
	};

	Dep.prototype.depend = function depend() {
		if (Dep.target) {
			Dep.target.addDep(this);
		}
	};

	Dep.prototype.notify = function notify() {
		// stabilize the subscriber list first
		var subs = this.subs.slice();
		for (var i = 0,
		l = subs.length; i < l; i++) {
			subs[i].update();
		}
	};

	// the current target watcher being evaluated.
	// this is globally unique because there could be only one
	// watcher being evaluated at any time.
	Dep.target = null;
	var targetStack = [];

	function pushTarget(_target) {
		if (Dep.target) {
			targetStack.push(Dep.target);
		}
		Dep.target = _target;
	}

	function popTarget() {
		Dep.target = targetStack.pop();
	}

	/*
 * not type checking this file because flow doesn't play well with
 * dynamically accessing methods on Array prototype
 */

	var arrayProto = Array.prototype;
	var arrayMethods = Object.create(arrayProto); ['push', 'pop', 'shift', 'unshift', 'splice', 'sort', 'reverse'].forEach(function(method) {
		// cache original method
		var original = arrayProto[method];
		def(arrayMethods, method,
		function mutator() {
			var args = [],
			len = arguments.length;
			while (len--) args[len] = arguments[len];

			var result = original.apply(this, args);
			var ob = this.__ob__;
			var inserted;
			switch (method) {
			case 'push':
			case 'unshift':
				inserted = args;
				break
			case 'splice':
				inserted = args.slice(2);
				break
			}
			if (inserted) {
				ob.observeArray(inserted);
			}
			// notify change
			ob.dep.notify();
			return result
		});
	});

	/*  */

	var arrayKeys = Object.getOwnPropertyNames(arrayMethods);

	/**
 * By default, when a reactive property is set, the new value is
 * also converted to become reactive. However when passing down props,
 * we don't want to force conversion because the value may be a nested value
 * under a frozen data structure. Converting it would defeat the optimization.
 */
	var observerState = {
		shouldConvert: true
	};

	/**
 * Observer class that are attached to each observed
 * object. Once attached, the observer converts target
 * object's property keys into getter/setters that
 * collect dependencies and dispatches updates.
 */
	var Observer = function Observer(value) {
		this.value = value;
		this.dep = new Dep();
		this.vmCount = 0;
		def(value, '__ob__', this);
		if (Array.isArray(value)) {
			var augment = hasProto ? protoAugment: copyAugment;
			augment(value, arrayMethods, arrayKeys);
			this.observeArray(value);
		} else {
			this.walk(value);
		}
	};

	/**
 * Walk through each property and convert them into
 * getter/setters. This method should only be called when
 * value type is Object.
 */
	Observer.prototype.walk = function walk(obj) {
		var keys = Object.keys(obj);
		for (var i = 0; i < keys.length; i++) {
			defineReactive$$1(obj, keys[i], obj[keys[i]]);
		}
	};

	/**
 * Observe a list of Array items.
 */
	Observer.prototype.observeArray = function observeArray(items) {
		for (var i = 0,
		l = items.length; i < l; i++) {
			observe(items[i]);
		}
	};

	// helpers
	/**
 * Augment an target Object or Array by intercepting
 * the prototype chain using __proto__
 */
	function protoAugment(target, src, keys) {
		/* eslint-disable no-proto */
		target.__proto__ = src;
		/* eslint-enable no-proto */
	}

	/**
 * Augment an target Object or Array by defining
 * hidden properties.
 */
	/* istanbul ignore next */
	function copyAugment(target, src, keys) {
		for (var i = 0,
		l = keys.length; i < l; i++) {
			var key = keys[i];
			def(target, key, src[key]);
		}
	}

	/**
 * Attempt to create an observer instance for a value,
 * returns the new observer if successfully observed,
 * or the existing observer if the value already has one.
 */
	function observe(value, asRootData) {
		if (!isObject(value)) {
			return
		}
		var ob;
		if (hasOwn(value, '__ob__') && value.__ob__ instanceof Observer) {
			ob = value.__ob__;
		} else if (observerState.shouldConvert && !isServerRendering() && (Array.isArray(value) || isPlainObject(value)) && Object.isExtensible(value) && !value._isVue) {
			ob = new Observer(value);
		}
		if (asRootData && ob) {
			ob.vmCount++;
		}
		return ob
	}

	/**
 * Define a reactive property on an Object.
 */
	function defineReactive$$1(obj, key, val, customSetter, shallow) {
		var dep = new Dep();

		var property = Object.getOwnPropertyDescriptor(obj, key);
		if (property && property.configurable === false) {
			return
		}

		// cater for pre-defined getter/setters
		var getter = property && property.get;
		var setter = property && property.set;

		var childOb = !shallow && observe(val);
		Object.defineProperty(obj, key, {
			enumerable: true,
			configurable: true,
			get: function reactiveGetter() {
				var value = getter ? getter.call(obj) : val;
				if (Dep.target) {
					dep.depend();
					if (childOb) {
						childOb.dep.depend();
						if (Array.isArray(value)) {
							dependArray(value);
						}
					}
				}
				return value
			},
			set: function reactiveSetter(newVal) {
				var value = getter ? getter.call(obj) : val;
				/* eslint-disable no-self-compare */
				if (newVal === value || (newVal !== newVal && value !== value)) {
					return
				}
				/* eslint-enable no-self-compare */
				if ("development" !== 'production' && customSetter) {
					customSetter();
				}
				if (setter) {
					setter.call(obj, newVal);
				} else {
					val = newVal;
				}
				childOb = !shallow && observe(newVal);
				dep.notify();
			}
		});
	}

	/**
 * Set a property on an object. Adds the new property and
 * triggers change notification if the property doesn't
 * already exist.
 */
	function set(target, key, val) {
		if (Array.isArray(target) && isValidArrayIndex(key)) {
			target.length = Math.max(target.length, key);
			target.splice(key, 1, val);
			return val
		}
		if (hasOwn(target, key)) {
			target[key] = val;
			return val
		}
		var ob = (target).__ob__;
		if (target._isVue || (ob && ob.vmCount)) {
			"development" !== 'production' && warn('Avoid adding reactive properties to a Vue instance or its root $data ' + 'at runtime - declare it upfront in the data option.');
			return val
		}
		if (!ob) {
			target[key] = val;
			return val
		}
		defineReactive$$1(ob.value, key, val);
		ob.dep.notify();
		return val
	}

	/**
 * Delete a property and trigger change if necessary.
 */
	function del(target, key) {
		if (Array.isArray(target) && isValidArrayIndex(key)) {
			target.splice(key, 1);
			return
		}
		var ob = (target).__ob__;
		if (target._isVue || (ob && ob.vmCount)) {
			"development" !== 'production' && warn('Avoid deleting properties on a Vue instance or its root $data ' + '- just set it to null.');
			return
		}
		if (!hasOwn(target, key)) {
			return
		}
		delete target[key];
		if (!ob) {
			return
		}
		ob.dep.notify();
	}

	/**
 * Collect dependencies on array elements when the array is touched, since
 * we cannot intercept array element access like property getters.
 */
	function dependArray(value) {
		for (var e = (void 0), i = 0, l = value.length; i < l; i++) {
			e = value[i];
			e && e.__ob__ && e.__ob__.dep.depend();
			if (Array.isArray(e)) {
				dependArray(e);
			}
		}
	}

	/*  */

	/**
 * Option overwriting strategies are functions that handle
 * how to merge a parent option value and a child option
 * value into the final value.
 */
	var strats = config.optionMergeStrategies;

	/**
 * Options with restrictions
 */
	{
		strats.el = strats.propsData = function(parent, child, vm, key) {
			if (!vm) {
				warn("option \"" + key + "\" can only be used during instance " + 'creation with the `new` keyword.');
			}
			return defaultStrat(parent, child)
		};
	}

	/**
 * Helper that recursively merges two data objects together.
 */
	function mergeData(to, from) {
		if (!from) {
			return to
		}
		var key, toVal, fromVal;
		var keys = Object.keys(from);
		for (var i = 0; i < keys.length; i++) {
			key = keys[i];
			toVal = to[key];
			fromVal = from[key];
			if (!hasOwn(to, key)) {
				set(to, key, fromVal);
			} else if (isPlainObject(toVal) && isPlainObject(fromVal)) {
				mergeData(toVal, fromVal);
			}
		}
		return to
	}

	/**
 * Data
 */
	function mergeDataOrFn(parentVal, childVal, vm) {
		if (!vm) {
			// in a Vue.extend merge, both should be functions
			if (!childVal) {
				return parentVal
			}
			if (!parentVal) {
				return childVal
			}
			// when parentVal & childVal are both present,
			// we need to return a function that returns the
			// merged result of both functions... no need to
			// check if parentVal is a function here because
			// it has to be a function to pass previous merges.
			return function mergedDataFn() {
				return mergeData(typeof childVal === 'function' ? childVal.call(this) : childVal, typeof parentVal === 'function' ? parentVal.call(this) : parentVal)
			}
		} else if (parentVal || childVal) {
			return function mergedInstanceDataFn() {
				// instance merge
				var instanceData = typeof childVal === 'function' ? childVal.call(vm) : childVal;
				var defaultData = typeof parentVal === 'function' ? parentVal.call(vm) : parentVal;
				if (instanceData) {
					return mergeData(instanceData, defaultData)
				} else {
					return defaultData
				}
			}
		}
	}

	strats.data = function(parentVal, childVal, vm) {
		if (!vm) {
			if (childVal && typeof childVal !== 'function') {
				"development" !== 'production' && warn('The "data" option should be a function ' + 'that returns a per-instance value in component ' + 'definitions.', vm);

				return parentVal
			}
			return mergeDataOrFn.call(this, parentVal, childVal)
		}

		return mergeDataOrFn(parentVal, childVal, vm)
	};

	/**
 * Hooks and props are merged as arrays.
 */
	function mergeHook(parentVal, childVal) {
		return childVal ? parentVal ? parentVal.concat(childVal) : Array.isArray(childVal) ? childVal: [childVal] : parentVal
	}

	LIFECYCLE_HOOKS.forEach(function(hook) {
		strats[hook] = mergeHook;
	});

	/**
 * Assets
 *
 * When a vm is present (instance creation), we need to do
 * a three-way merge between constructor options, instance
 * options and parent options.
 */
	function mergeAssets(parentVal, childVal) {
		var res = Object.create(parentVal || null);
		return childVal ? extend(res, childVal) : res
	}

	ASSET_TYPES.forEach(function(type) {
		strats[type + 's'] = mergeAssets;
	});

	/**
 * Watchers.
 *
 * Watchers hashes should not overwrite one
 * another, so we merge them as arrays.
 */
	strats.watch = function(parentVal, childVal) {
		// work around Firefox's Object.prototype.watch...
		if (parentVal === nativeWatch) {
			parentVal = undefined;
		}
		if (childVal === nativeWatch) {
			childVal = undefined;
		}
		/* istanbul ignore if */
		if (!childVal) {
			return Object.create(parentVal || null)
		}
		if (!parentVal) {
			return childVal
		}
		var ret = {};
		extend(ret, parentVal);
		for (var key in childVal) {
			var parent = ret[key];
			var child = childVal[key];
			if (parent && !Array.isArray(parent)) {
				parent = [parent];
			}
			ret[key] = parent ? parent.concat(child) : Array.isArray(child) ? child: [child];
		}
		return ret
	};

	/**
 * Other object hashes.
 */
	strats.props = strats.methods = strats.inject = strats.computed = function(parentVal, childVal) {
		if (!parentVal) {
			return childVal
		}
		var ret = Object.create(null);
		extend(ret, parentVal);
		if (childVal) {
			extend(ret, childVal);
		}
		return ret
	}; strats.provide = mergeDataOrFn;

	/**
 * Default strategy.
 */
	var defaultStrat = function(parentVal, childVal) {
		return childVal === undefined ? parentVal: childVal
	};

	/**
 * Validate component names
 */
	function checkComponents(options) {
		for (var key in options.components) {
			var lower = key.toLowerCase();
			if (isBuiltInTag(lower) || config.isReservedTag(lower)) {
				warn('Do not use built-in or reserved HTML elements as component ' + 'id: ' + key);
			}
		}
	}

	/**
 * Ensure all props option syntax are normalized into the
 * Object-based format.
 */
	function normalizeProps(options) {
		var props = options.props;
		if (!props) {
			return
		}
		var res = {};
		var i, val, name;
		if (Array.isArray(props)) {
			i = props.length;
			while (i--) {
				val = props[i];
				if (typeof val === 'string') {
					name = camelize(val);
					res[name] = {
						type: null
					};
				} else {
					warn('props must be strings when using array syntax.');
				}
			}
		} else if (isPlainObject(props)) {
			for (var key in props) {
				val = props[key];
				name = camelize(key);
				res[name] = isPlainObject(val) ? val: {
					type: val
				};
			}
		}
		options.props = res;
	}

	/**
 * Normalize all injections into Object-based format
 */
	function normalizeInject(options) {
		var inject = options.inject;
		if (Array.isArray(inject)) {
			var normalized = options.inject = {};
			for (var i = 0; i < inject.length; i++) {
				normalized[inject[i]] = inject[i];
			}
		}
	}

	/**
 * Normalize raw function directives into object format.
 */
	function normalizeDirectives(options) {
		var dirs = options.directives;
		if (dirs) {
			for (var key in dirs) {
				var def = dirs[key];
				if (typeof def === 'function') {
					dirs[key] = {
						bind: def,
						update: def
					};
				}
			}
		}
	}

	/**
 * Merge two option objects into a new one.
 * Core utility used in both instantiation and inheritance.
 */
	function mergeOptions(parent, child, vm) {
		{
			checkComponents(child);
		}

		if (typeof child === 'function') {
			child = child.options;
		}

		normalizeProps(child);
		normalizeInject(child);
		normalizeDirectives(child);
		var extendsFrom = child.extends;
		if (extendsFrom) {
			parent = mergeOptions(parent, extendsFrom, vm);
		}
		if (child.mixins) {
			for (var i = 0,
			l = child.mixins.length; i < l; i++) {
				parent = mergeOptions(parent, child.mixins[i], vm);
			}
		}
		var options = {};
		var key;
		for (key in parent) {
			mergeField(key);
		}
		for (key in child) {
			if (!hasOwn(parent, key)) {
				mergeField(key);
			}
		}
		function mergeField(key) {
			var strat = strats[key] || defaultStrat;
			options[key] = strat(parent[key], child[key], vm, key);
		}
		return options
	}

	/**
 * Resolve an asset.
 * This function is used because child instances need access
 * to assets defined in its ancestor chain.
 */
	function resolveAsset(options, type, id, warnMissing) {
		/* istanbul ignore if */
		if (typeof id !== 'string') {
			return
		}
		var assets = options[type];
		// check local registration variations first
		if (hasOwn(assets, id)) {
			return assets[id]
		}
		var camelizedId = camelize(id);
		if (hasOwn(assets, camelizedId)) {
			return assets[camelizedId]
		}
		var PascalCaseId = capitalize(camelizedId);
		if (hasOwn(assets, PascalCaseId)) {
			return assets[PascalCaseId]
		}
		// fallback to prototype chain
		var res = assets[id] || assets[camelizedId] || assets[PascalCaseId];
		if ("development" !== 'production' && warnMissing && !res) {
			warn('Failed to resolve ' + type.slice(0, -1) + ': ' + id, options);
		}
		return res
	}

	/*  */

	function validateProp(key, propOptions, propsData, vm) {
		var prop = propOptions[key];
		var absent = !hasOwn(propsData, key);
		var value = propsData[key];
		// handle boolean props
		if (isType(Boolean, prop.type)) {
			if (absent && !hasOwn(prop, 'default')) {
				value = false;
			} else if (!isType(String, prop.type) && (value === '' || value === hyphenate(key))) {
				value = true;
			}
		}
		// check default value
		if (value === undefined) {
			value = getPropDefaultValue(vm, prop, key);
			// since the default value is a fresh copy,
			// make sure to observe it.
			var prevShouldConvert = observerState.shouldConvert;
			observerState.shouldConvert = true;
			observe(value);
			observerState.shouldConvert = prevShouldConvert;
		} {
			assertProp(prop, key, value, vm, absent);
		}
		return value
	}

	/**
 * Get the default value of a prop.
 */
	function getPropDefaultValue(vm, prop, key) {
		// no default, return undefined
		if (!hasOwn(prop, 'default')) {
			return undefined
		}
		var def = prop.
	default;
		// warn against non-factory defaults for Object & Array
		if ("development" !== 'production' && isObject(def)) {
			warn('Invalid default value for prop "' + key + '": ' + 'Props with type Object/Array must use a factory function ' + 'to return the default value.', vm);
		}
		// the raw prop value was also undefined from previous render,
		// return previous default value to avoid unnecessary watcher trigger
		if (vm && vm.$options.propsData && vm.$options.propsData[key] === undefined && vm._props[key] !== undefined) {
			return vm._props[key]
		}
		// call factory function for non-Function types
		// a value is Function if its prototype is function even across different execution context
		return typeof def === 'function' && getType(prop.type) !== 'Function' ? def.call(vm) : def
	}

	/**
 * Assert whether a prop is valid.
 */
	function assertProp(prop, name, value, vm, absent) {
		if (prop.required && absent) {
			warn('Missing required prop: "' + name + '"', vm);
			return
		}
		if (value == null && !prop.required) {
			return
		}
		var type = prop.type;
		var valid = !type || type === true;
		var expectedTypes = [];
		if (type) {
			if (!Array.isArray(type)) {
				type = [type];
			}
			for (var i = 0; i < type.length && !valid; i++) {
				var assertedType = assertType(value, type[i]);
				expectedTypes.push(assertedType.expectedType || '');
				valid = assertedType.valid;
			}
		}
		if (!valid) {
			warn('Invalid prop: type check failed for prop "' + name + '".' + ' Expected ' + expectedTypes.map(capitalize).join(', ') + ', got ' + Object.prototype.toString.call(value).slice(8, -1) + '.', vm);
			return
		}
		var validator = prop.validator;
		if (validator) {
			if (!validator(value)) {
				warn('Invalid prop: custom validator check failed for prop "' + name + '".', vm);
			}
		}
	}

	var simpleCheckRE = /^(String|Number|Boolean|Function|Symbol)$/;

	function assertType(value, type) {
		var valid;
		var expectedType = getType(type);
		if (simpleCheckRE.test(expectedType)) {
			var t = typeof value;
			valid = t === expectedType.toLowerCase();
			// for primitive wrapper objects
			if (!valid && t === 'object') {
				valid = value instanceof type;
			}
		} else if (expectedType === 'Object') {
			valid = isPlainObject(value);
		} else if (expectedType === 'Array') {
			valid = Array.isArray(value);
		} else {
			valid = value instanceof type;
		}
		return {
			valid: valid,
			expectedType: expectedType
		}
	}

	/**
 * Use function string name to check built-in types,
 * because a simple equality check will fail when running
 * across different vms / iframes.
 */
	function getType(fn) {
		var match = fn && fn.toString().match(/^\s*function (\w+)/);
		return match ? match[1] : ''
	}

	function isType(type, fn) {
		if (!Array.isArray(fn)) {
			return getType(fn) === getType(type)
		}
		for (var i = 0,
		len = fn.length; i < len; i++) {
			if (getType(fn[i]) === getType(type)) {
				return true
			}
		}
		/* istanbul ignore next */
		return false
	}

	/*  */

	var mark;
	var measure;

	{
		var perf = inBrowser && window.performance;
		/* istanbul ignore if */
		if (perf && perf.mark && perf.measure && perf.clearMarks && perf.clearMeasures) {
			mark = function(tag) {
				return perf.mark(tag);
			};
			measure = function(name, startTag, endTag) {
				perf.measure(name, startTag, endTag);
				perf.clearMarks(startTag);
				perf.clearMarks(endTag);
				perf.clearMeasures(name);
			};
		}
	}

	/* not type checking this file because flow doesn't play well with Proxy */

	var initProxy;

	{
		var allowedGlobals = makeMap('Infinity,undefined,NaN,isFinite,isNaN,' + 'parseFloat,parseInt,decodeURI,decodeURIComponent,encodeURI,encodeURIComponent,' + 'Math,Number,Date,Array,Object,Boolean,String,RegExp,Map,Set,JSON,Intl,' + 'require' // for Webpack/Browserify
		);

		var warnNonPresent = function(target, key) {
			warn("Property or method \"" + key + "\" is not defined on the instance but " + "referenced during render. Make sure to declare reactive data " + "properties in the data option.", target);
		};

		var hasProxy = typeof Proxy !== 'undefined' && Proxy.toString().match(/native code/);

		if (hasProxy) {
			var isBuiltInModifier = makeMap('stop,prevent,self,ctrl,shift,alt,meta');
			config.keyCodes = new Proxy(config.keyCodes, {
				set: function set(target, key, value) {
					if (isBuiltInModifier(key)) {
						warn(("Avoid overwriting built-in modifier in config.keyCodes: ." + key));
						return false
					} else {
						target[key] = value;
						return true
					}
				}
			});
		}

		var hasHandler = {
			has: function has(target, key) {
				var has = key in target;
				var isAllowed = allowedGlobals(key) || key.charAt(0) === '_';
				if (!has && !isAllowed) {
					warnNonPresent(target, key);
				}
				return has || !isAllowed
			}
		};

		var getHandler = {
			get: function get(target, key) {
				if (typeof key === 'string' && !(key in target)) {
					warnNonPresent(target, key);
				}
				return target[key]
			}
		};

		initProxy = function initProxy(vm) {
			if (hasProxy) {
				// determine which proxy handler to use
				var options = vm.$options;
				var handlers = options.render && options.render._withStripped ? getHandler: hasHandler;
				vm._renderProxy = new Proxy(vm, handlers);
			} else {
				vm._renderProxy = vm;
			}
		};
	}

	/*  */

	var VNode = function VNode(tag, data, children, text, elm, context, componentOptions, asyncFactory) {
		this.tag = tag;
		this.data = data;
		this.children = children;
		this.text = text;
		this.elm = elm;
		this.ns = undefined;
		this.context = context;
		this.functionalContext = undefined;
		this.key = data && data.key;
		this.componentOptions = componentOptions;
		this.componentInstance = undefined;
		this.parent = undefined;
		this.raw = false;
		this.isStatic = false;
		this.isRootInsert = true;
		this.isComment = false;
		this.isCloned = false;
		this.isOnce = false;
		this.asyncFactory = asyncFactory;
		this.asyncMeta = undefined;
		this.isAsyncPlaceholder = false;
	};

	var prototypeAccessors = {
		child: {}
	};

	// DEPRECATED: alias for componentInstance for backwards compat.
	/* istanbul ignore next */
	prototypeAccessors.child.get = function() {
		return this.componentInstance
	};

	Object.defineProperties(VNode.prototype, prototypeAccessors);

	var createEmptyVNode = function(text) {
		if (text === void 0) text = '';

		var node = new VNode();
		node.text = text;
		node.isComment = true;
		return node
	};

	function createTextVNode(val) {
		return new VNode(undefined, undefined, undefined, String(val))
	}

	// optimized shallow clone
	// used for static nodes and slot nodes because they may be reused across
	// multiple renders, cloning them avoids errors when DOM manipulations rely
	// on their elm reference.
	function cloneVNode(vnode, deep) {
		var cloned = new VNode(vnode.tag, vnode.data, vnode.children, vnode.text, vnode.elm, vnode.context, vnode.componentOptions, vnode.asyncFactory);
		cloned.ns = vnode.ns;
		cloned.isStatic = vnode.isStatic;
		cloned.key = vnode.key;
		cloned.isComment = vnode.isComment;
		cloned.isCloned = true;
		if (deep && vnode.children) {
			cloned.children = cloneVNodes(vnode.children);
		}
		return cloned
	}

	function cloneVNodes(vnodes, deep) {
		var len = vnodes.length;
		var res = new Array(len);
		for (var i = 0; i < len; i++) {
			res[i] = cloneVNode(vnodes[i], deep);
		}
		return res
	}

	/*  */

	var normalizeEvent = cached(function(name) {
		var passive = name.charAt(0) === '&';
		name = passive ? name.slice(1) : name;
		var once$$1 = name.charAt(0) === '~'; // Prefixed last, checked first
		name = once$$1 ? name.slice(1) : name;
		var capture = name.charAt(0) === '!';
		name = capture ? name.slice(1) : name;
		var plain = !(passive || once$$1 || capture);
		return {
			name: name,
			plain: plain,
			once: once$$1,
			capture: capture,
			passive: passive
		}
	});

	function createFnInvoker(fns) {
		function invoker() {
			var arguments$1 = arguments;

			var fns = invoker.fns;
			if (Array.isArray(fns)) {
				var cloned = fns.slice();
				for (var i = 0; i < cloned.length; i++) {
					cloned[i].apply(null, arguments$1);
				}
			} else {
				// return handler return value for single handlers
				return fns.apply(null, arguments)
			}
		}
		invoker.fns = fns;
		return invoker
	}

	// #6552
	function prioritizePlainEvents(a, b) {
		return a.plain ? -1 : b.plain ? 1 : 0
	}

	function updateListeners(on, oldOn, add, remove$$1, vm) {
		var name, cur, old, event;
		var toAdd = [];
		var hasModifier = false;
		for (name in on) {
			cur = on[name];
			old = oldOn[name];
			event = normalizeEvent(name);
			if (!event.plain) {
				hasModifier = true;
			}
			if (isUndef(cur)) {
				"development" !== 'production' && warn("Invalid handler for event \"" + (event.name) + "\": got " + String(cur), vm);
			} else if (isUndef(old)) {
				if (isUndef(cur.fns)) {
					cur = on[name] = createFnInvoker(cur);
				}
				event.handler = cur;
				toAdd.push(event);
			} else if (cur !== old) {
				old.fns = cur;
				on[name] = old;
			}
		}
		if (toAdd.length) {
			if (hasModifier) {
				toAdd.sort(prioritizePlainEvents);
			}
			for (var i = 0; i < toAdd.length; i++) {
				var event$1 = toAdd[i];
				add(event$1.name, event$1.handler, event$1.once, event$1.capture, event$1.passive);
			}
		}
		for (name in oldOn) {
			if (isUndef(on[name])) {
				event = normalizeEvent(name);
				remove$$1(event.name, oldOn[name], event.capture);
			}
		}
	}

	/*  */

	function mergeVNodeHook(def, hookKey, hook) {
		var invoker;
		var oldHook = def[hookKey];

		function wrappedHook() {
			hook.apply(this, arguments);
			// important: remove merged hook to ensure it's called only once
			// and prevent memory leak
			remove(invoker.fns, wrappedHook);
		}

		if (isUndef(oldHook)) {
			// no existing hook
			invoker = createFnInvoker([wrappedHook]);
		} else {
			/* istanbul ignore if */
			if (isDef(oldHook.fns) && isTrue(oldHook.merged)) {
				// already a merged invoker
				invoker = oldHook;
				invoker.fns.push(wrappedHook);
			} else {
				// existing plain hook
				invoker = createFnInvoker([oldHook, wrappedHook]);
			}
		}

		invoker.merged = true;
		def[hookKey] = invoker;
	}

	/*  */

	function extractPropsFromVNodeData(data, Ctor, tag) {
		// we are only extracting raw values here.
		// validation and default values are handled in the child
		// component itself.
		var propOptions = Ctor.options.props;
		if (isUndef(propOptions)) {
			return
		}
		var res = {};
		var attrs = data.attrs;
		var props = data.props;
		if (isDef(attrs) || isDef(props)) {
			for (var key in propOptions) {
				var altKey = hyphenate(key); {
					var keyInLowerCase = key.toLowerCase();
					if (key !== keyInLowerCase && attrs && hasOwn(attrs, keyInLowerCase)) {
						tip("Prop \"" + keyInLowerCase + "\" is passed to component " + (formatComponentName(tag || Ctor)) + ", but the declared prop name is" + " \"" + key + "\". " + "Note that HTML attributes are case-insensitive and camelCased " + "props need to use their kebab-case equivalents when using in-DOM " + "templates. You should probably use \"" + altKey + "\" instead of \"" + key + "\".");
					}
				}
				checkProp(res, props, key, altKey, true) || checkProp(res, attrs, key, altKey, false);
			}
		}
		return res
	}

	function checkProp(res, hash, key, altKey, preserve) {
		if (isDef(hash)) {
			if (hasOwn(hash, key)) {
				res[key] = hash[key];
				if (!preserve) {
					delete hash[key];
				}
				return true
			} else if (hasOwn(hash, altKey)) {
				res[key] = hash[altKey];
				if (!preserve) {
					delete hash[altKey];
				}
				return true
			}
		}
		return false
	}

	/*  */

	// The template compiler attempts to minimize the need for normalization by
	// statically analyzing the template at compile time.
	//
	// For plain HTML markup, normalization can be completely skipped because the
	// generated render function is guaranteed to return Array<VNode>. There are
	// two cases where extra normalization is needed:
	// 1. When the children contains components - because a functional component
	// may return an Array instead of a single root. In this case, just a simple
	// normalization is needed - if any child is an Array, we flatten the whole
	// thing with Array.prototype.concat. It is guaranteed to be only 1-level deep
	// because functional components already normalize their own children.
	function simpleNormalizeChildren(children) {
		for (var i = 0; i < children.length; i++) {
			if (Array.isArray(children[i])) {
				return Array.prototype.concat.apply([], children)
			}
		}
		return children
	}

	// 2. When the children contains constructs that always generated nested Arrays,
	// e.g. <template>, <slot>, v-for, or when the children is provided by user
	// with hand-written render functions / JSX. In such cases a full normalization
	// is needed to cater to all possible types of children values.
	function normalizeChildren(children) {
		return isPrimitive(children) ? [createTextVNode(children)] : Array.isArray(children) ? normalizeArrayChildren(children) : undefined
	}

	function isTextNode(node) {
		return isDef(node) && isDef(node.text) && isFalse(node.isComment)
	}

	function normalizeArrayChildren(children, nestedIndex) {
		var res = [];
		var i, c, last;
		for (i = 0; i < children.length; i++) {
			c = children[i];
			if (isUndef(c) || typeof c === 'boolean') {
				continue
			}
			last = res[res.length - 1];
			//  nested
			if (Array.isArray(c)) {
				res.push.apply(res, normalizeArrayChildren(c, ((nestedIndex || '') + "_" + i)));
			} else if (isPrimitive(c)) {
				if (isTextNode(last)) {
					// merge adjacent text nodes
					// this is necessary for SSR hydration because text nodes are
					// essentially merged when rendered to HTML strings
					(last).text += String(c);
				} else if (c !== '') {
					// convert primitive to vnode
					res.push(createTextVNode(c));
				}
			} else {
				if (isTextNode(c) && isTextNode(last)) {
					// merge adjacent text nodes
					res[res.length - 1] = createTextVNode(last.text + c.text);
				} else {
					// default key for nested array children (likely generated by v-for)
					if (isTrue(children._isVList) && isDef(c.tag) && isUndef(c.key) && isDef(nestedIndex)) {
						c.key = "__vlist" + nestedIndex + "_" + i + "__";
					}
					res.push(c);
				}
			}
		}
		return res
	}

	/*  */

	function ensureCtor(comp, base) {
		if (comp.__esModule && comp.
	default) {
			comp = comp.
		default;
		}
		return isObject(comp) ? base.extend(comp) : comp
	}

	function createAsyncPlaceholder(factory, data, context, children, tag) {
		var node = createEmptyVNode();
		node.asyncFactory = factory;
		node.asyncMeta = {
			data: data,
			context: context,
			children: children,
			tag: tag
		};
		return node
	}

	function resolveAsyncComponent(factory, baseCtor, context) {
		if (isTrue(factory.error) && isDef(factory.errorComp)) {
			return factory.errorComp
		}

		if (isDef(factory.resolved)) {
			return factory.resolved
		}

		if (isTrue(factory.loading) && isDef(factory.loadingComp)) {
			return factory.loadingComp
		}

		if (isDef(factory.contexts)) {
			// already pending
			factory.contexts.push(context);
		} else {
			var contexts = factory.contexts = [context];
			var sync = true;

			var forceRender = function() {
				for (var i = 0,
				l = contexts.length; i < l; i++) {
					contexts[i].$forceUpdate();
				}
			};

			var resolve = once(function(res) {
				// cache resolved
				factory.resolved = ensureCtor(res, baseCtor);
				// invoke callbacks only if this is not a synchronous resolve
				// (async resolves are shimmed as synchronous during SSR)
				if (!sync) {
					forceRender();
				}
			});

			var reject = once(function(reason) {
				"development" !== 'production' && warn("Failed to resolve async component: " + (String(factory)) + (reason ? ("\nReason: " + reason) : ''));
				if (isDef(factory.errorComp)) {
					factory.error = true;
					forceRender();
				}
			});

			var res = factory(resolve, reject);

			if (isObject(res)) {
				if (typeof res.then === 'function') {
					// () => Promise
					if (isUndef(factory.resolved)) {
						res.then(resolve, reject);
					}
				} else if (isDef(res.component) && typeof res.component.then === 'function') {
					res.component.then(resolve, reject);

					if (isDef(res.error)) {
						factory.errorComp = ensureCtor(res.error, baseCtor);
					}

					if (isDef(res.loading)) {
						factory.loadingComp = ensureCtor(res.loading, baseCtor);
						if (res.delay === 0) {
							factory.loading = true;
						} else {
							setTimeout(function() {
								if (isUndef(factory.resolved) && isUndef(factory.error)) {
									factory.loading = true;
									forceRender();
								}
							},
							res.delay || 200);
						}
					}

					if (isDef(res.timeout)) {
						setTimeout(function() {
							if (isUndef(factory.resolved)) {
								reject("timeout (" + (res.timeout) + "ms)");
							}
						},
						res.timeout);
					}
				}
			}

			sync = false;
			// return in case resolved synchronously
			return factory.loading ? factory.loadingComp: factory.resolved
		}
	}

	/*  */

	function isAsyncPlaceholder(node) {
		return node.isComment && node.asyncFactory
	}

	/*  */

	function getFirstComponentChild(children) {
		if (Array.isArray(children)) {
			for (var i = 0; i < children.length; i++) {
				var c = children[i];
				if (isDef(c) && (isDef(c.componentOptions) || isAsyncPlaceholder(c))) {
					return c
				}
			}
		}
	}

	/*  */

	/*  */

	function initEvents(vm) {
		vm._events = Object.create(null);
		vm._hasHookEvent = false;
		// init parent attached events
		var listeners = vm.$options._parentListeners;
		if (listeners) {
			updateComponentListeners(vm, listeners);
		}
	}

	var target;

	function add(event, fn, once$$1) {
		if (once$$1) {
			target.$once(event, fn);
		} else {
			target.$on(event, fn);
		}
	}

	function remove$1(event, fn) {
		target.$off(event, fn);
	}

	function updateComponentListeners(vm, listeners, oldListeners) {
		target = vm;
		updateListeners(listeners, oldListeners || {},
		add, remove$1, vm);
	}

	function eventsMixin(Vue) {
		var hookRE = /^hook:/;
		Vue.prototype.$on = function(event, fn) {
			var this$1 = this;

			var vm = this;
			if (Array.isArray(event)) {
				for (var i = 0,
				l = event.length; i < l; i++) {
					this$1.$on(event[i], fn);
				}
			} else { (vm._events[event] || (vm._events[event] = [])).push(fn);
				// optimize hook:event cost by using a boolean flag marked at registration
				// instead of a hash lookup
				if (hookRE.test(event)) {
					vm._hasHookEvent = true;
				}
			}
			return vm
		};

		Vue.prototype.$once = function(event, fn) {
			var vm = this;
			function on() {
				vm.$off(event, on);
				fn.apply(vm, arguments);
			}
			on.fn = fn;
			vm.$on(event, on);
			return vm
		};

		Vue.prototype.$off = function(event, fn) {
			var this$1 = this;

			var vm = this;
			// all
			if (!arguments.length) {
				vm._events = Object.create(null);
				return vm
			}
			// array of events
			if (Array.isArray(event)) {
				for (var i = 0,
				l = event.length; i < l; i++) {
					this$1.$off(event[i], fn);
				}
				return vm
			}
			// specific event
			var cbs = vm._events[event];
			if (!cbs) {
				return vm
			}
			if (arguments.length === 1) {
				vm._events[event] = null;
				return vm
			}
			if (fn) {
				// specific handler
				var cb;
				var i$1 = cbs.length;
				while (i$1--) {
					cb = cbs[i$1];
					if (cb === fn || cb.fn === fn) {
						cbs.splice(i$1, 1);
						break
					}
				}
			}
			return vm
		};

		Vue.prototype.$emit = function(event) {
			var vm = this; {
				var lowerCaseEvent = event.toLowerCase();
				if (lowerCaseEvent !== event && vm._events[lowerCaseEvent]) {
					tip("Event \"" + lowerCaseEvent + "\" is emitted in component " + (formatComponentName(vm)) + " but the handler is registered for \"" + event + "\". " + "Note that HTML attributes are case-insensitive and you cannot use " + "v-on to listen to camelCase events when using in-DOM templates. " + "You should probably use \"" + (hyphenate(event)) + "\" instead of \"" + event + "\".");
				}
			}
			var cbs = vm._events[event];
			if (cbs) {
				cbs = cbs.length > 1 ? toArray(cbs) : cbs;
				var args = toArray(arguments, 1);
				for (var i = 0,
				l = cbs.length; i < l; i++) {
					try {
						cbs[i].apply(vm, args);
					} catch(e) {
						handleError(e, vm, ("event handler for \"" + event + "\""));
					}
				}
			}
			return vm
		};
	}

	/*  */

	/**
 * Runtime helper for resolving raw children VNodes into a slot object.
 */
	function resolveSlots(children, context) {
		var slots = {};
		if (!children) {
			return slots
		}
		var defaultSlot = [];
		for (var i = 0,
		l = children.length; i < l; i++) {
			var child = children[i];
			var data = child.data;
			// remove slot attribute if the node is resolved as a Vue slot node
			if (data && data.attrs && data.attrs.slot) {
				delete data.attrs.slot;
			}
			// named slots should only be respected if the vnode was rendered in the
			// same context.
			if ((child.context === context || child.functionalContext === context) && data && data.slot != null) {
				var name = child.data.slot;
				var slot = (slots[name] || (slots[name] = []));
				if (child.tag === 'template') {
					slot.push.apply(slot, child.children);
				} else {
					slot.push(child);
				}
			} else {
				defaultSlot.push(child);
			}
		}
		// ignore whitespace
		if (!defaultSlot.every(isWhitespace)) {
			slots.
		default = defaultSlot;
		}
		return slots
	}

	function isWhitespace(node) {
		return node.isComment || node.text === ' '
	}

	function resolveScopedSlots(fns, // see flow/vnode
	res) {
		res = res || {};
		for (var i = 0; i < fns.length; i++) {
			if (Array.isArray(fns[i])) {
				resolveScopedSlots(fns[i], res);
			} else {
				res[fns[i].key] = fns[i].fn;
			}
		}
		return res
	}

	/*  */

	var activeInstance = null;
	var isUpdatingChildComponent = false;

	function initLifecycle(vm) {
		var options = vm.$options;

		// locate first non-abstract parent
		var parent = options.parent;
		if (parent && !options.abstract) {
			while (parent.$options.abstract && parent.$parent) {
				parent = parent.$parent;
			}
			parent.$children.push(vm);
		}

		vm.$parent = parent;
		vm.$root = parent ? parent.$root: vm;

		vm.$children = [];
		vm.$refs = {};

		vm._watcher = null;
		vm._inactive = null;
		vm._directInactive = false;
		vm._isMounted = false;
		vm._isDestroyed = false;
		vm._isBeingDestroyed = false;
	}

	function lifecycleMixin(Vue) {
		Vue.prototype._update = function(vnode, hydrating) {
			var vm = this;
			if (vm._isMounted) {
				callHook(vm, 'beforeUpdate');
			}
			var prevEl = vm.$el;
			var prevVnode = vm._vnode;
			var prevActiveInstance = activeInstance;
			activeInstance = vm;
			vm._vnode = vnode;
			// Vue.prototype.__patch__ is injected in entry points
			// based on the rendering backend used.
			if (!prevVnode) {
				// initial render
				vm.$el = vm.__patch__(vm.$el, vnode, hydrating, false
				/* removeOnly */
				, vm.$options._parentElm, vm.$options._refElm);
				// no need for the ref nodes after initial patch
				// this prevents keeping a detached DOM tree in memory (#5851)
				vm.$options._parentElm = vm.$options._refElm = null;
			} else {
				// updates
				vm.$el = vm.__patch__(prevVnode, vnode);
			}
			activeInstance = prevActiveInstance;
			// update __vue__ reference
			if (prevEl) {
				prevEl.__vue__ = null;
			}
			if (vm.$el) {
				vm.$el.__vue__ = vm;
			}
			// if parent is an HOC, update its $el as well
			if (vm.$vnode && vm.$parent && vm.$vnode === vm.$parent._vnode) {
				vm.$parent.$el = vm.$el;
			}
			// updated hook is called by the scheduler to ensure that children are
			// updated in a parent's updated hook.
		};

		Vue.prototype.$forceUpdate = function() {
			var vm = this;
			if (vm._watcher) {
				vm._watcher.update();
			}
		};

		Vue.prototype.$destroy = function() {
			var vm = this;
			if (vm._isBeingDestroyed) {
				return
			}
			callHook(vm, 'beforeDestroy');
			vm._isBeingDestroyed = true;
			// remove self from parent
			var parent = vm.$parent;
			if (parent && !parent._isBeingDestroyed && !vm.$options.abstract) {
				remove(parent.$children, vm);
			}
			// teardown watchers
			if (vm._watcher) {
				vm._watcher.teardown();
			}
			var i = vm._watchers.length;
			while (i--) {
				vm._watchers[i].teardown();
			}
			// remove reference from data ob
			// frozen object may not have observer.
			if (vm._data.__ob__) {
				vm._data.__ob__.vmCount--;
			}
			// call the last hook...
			vm._isDestroyed = true;
			// invoke destroy hooks on current rendered tree
			vm.__patch__(vm._vnode, null);
			// fire destroyed hook
			callHook(vm, 'destroyed');
			// turn off all instance listeners.
			vm.$off();
			// remove __vue__ reference
			if (vm.$el) {
				vm.$el.__vue__ = null;
			}
		};
	}

	function mountComponent(vm, el, hydrating) {
		vm.$el = el;
		if (!vm.$options.render) {
			vm.$options.render = createEmptyVNode; {
				/* istanbul ignore if */
				if ((vm.$options.template && vm.$options.template.charAt(0) !== '#') || vm.$options.el || el) {
					warn('You are using the runtime-only build of Vue where the template ' + 'compiler is not available. Either pre-compile the templates into ' + 'render functions, or use the compiler-included build.', vm);
				} else {
					warn('Failed to mount component: template or render function not defined.', vm);
				}
			}
		}
		callHook(vm, 'beforeMount');

		var updateComponent;
		/* istanbul ignore if */
		if ("development" !== 'production' && config.performance && mark) {
			updateComponent = function() {
				var name = vm._name;
				var id = vm._uid;
				var startTag = "vue-perf-start:" + id;
				var endTag = "vue-perf-end:" + id;

				mark(startTag);
				var vnode = vm._render();
				mark(endTag);
				measure((name + " render"), startTag, endTag);

				mark(startTag);
				vm._update(vnode, hydrating);
				mark(endTag);
				measure((name + " patch"), startTag, endTag);
			};
		} else {
			updateComponent = function() {
				vm._update(vm._render(), hydrating);
			};
		}

		vm._watcher = new Watcher(vm, updateComponent, noop);
		hydrating = false;

		// manually mounted instance, call mounted on self
		// mounted is called for render-created child components in its inserted hook
		if (vm.$vnode == null) {
			vm._isMounted = true;
			callHook(vm, 'mounted');
		}
		return vm
	}

	function updateChildComponent(vm, propsData, listeners, parentVnode, renderChildren) {
		{
			isUpdatingChildComponent = true;
		}

		// determine whether component has slot children
		// we need to do this before overwriting $options._renderChildren
		var hasChildren = !!(renderChildren || // has new static slots
		vm.$options._renderChildren || // has old static slots
		parentVnode.data.scopedSlots || // has new scoped slots
		vm.$scopedSlots !== emptyObject // has old scoped slots
		);

		vm.$options._parentVnode = parentVnode;
		vm.$vnode = parentVnode; // update vm's placeholder node without re-render
		if (vm._vnode) { // update child tree's parent
			vm._vnode.parent = parentVnode;
		}
		vm.$options._renderChildren = renderChildren;

		// update $attrs and $listeners hash
		// these are also reactive so they may trigger child update if the child
		// used them during render
		vm.$attrs = (parentVnode.data && parentVnode.data.attrs) || emptyObject;
		vm.$listeners = listeners || emptyObject;

		// update props
		if (propsData && vm.$options.props) {
			observerState.shouldConvert = false;
			var props = vm._props;
			var propKeys = vm.$options._propKeys || [];
			for (var i = 0; i < propKeys.length; i++) {
				var key = propKeys[i];
				props[key] = validateProp(key, vm.$options.props, propsData, vm);
			}
			observerState.shouldConvert = true;
			// keep a copy of raw propsData
			vm.$options.propsData = propsData;
		}

		// update listeners
		if (listeners) {
			var oldListeners = vm.$options._parentListeners;
			vm.$options._parentListeners = listeners;
			updateComponentListeners(vm, listeners, oldListeners);
		}
		// resolve slots + force update if has children
		if (hasChildren) {
			vm.$slots = resolveSlots(renderChildren, parentVnode.context);
			vm.$forceUpdate();
		}

		{
			isUpdatingChildComponent = false;
		}
	}

	function isInInactiveTree(vm) {
		while (vm && (vm = vm.$parent)) {
			if (vm._inactive) {
				return true
			}
		}
		return false
	}

	function activateChildComponent(vm, direct) {
		if (direct) {
			vm._directInactive = false;
			if (isInInactiveTree(vm)) {
				return
			}
		} else if (vm._directInactive) {
			return
		}
		if (vm._inactive || vm._inactive === null) {
			vm._inactive = false;
			for (var i = 0; i < vm.$children.length; i++) {
				activateChildComponent(vm.$children[i]);
			}
			callHook(vm, 'activated');
		}
	}

	function deactivateChildComponent(vm, direct) {
		if (direct) {
			vm._directInactive = true;
			if (isInInactiveTree(vm)) {
				return
			}
		}
		if (!vm._inactive) {
			vm._inactive = true;
			for (var i = 0; i < vm.$children.length; i++) {
				deactivateChildComponent(vm.$children[i]);
			}
			callHook(vm, 'deactivated');
		}
	}

	function callHook(vm, hook) {
		var handlers = vm.$options[hook];
		if (handlers) {
			for (var i = 0,
			j = handlers.length; i < j; i++) {
				try {
					handlers[i].call(vm);
				} catch(e) {
					handleError(e, vm, (hook + " hook"));
				}
			}
		}
		if (vm._hasHookEvent) {
			vm.$emit('hook:' + hook);
		}
	}

	/*  */

	var MAX_UPDATE_COUNT = 100;

	var queue = [];
	var activatedChildren = [];
	var has = {};
	var circular = {};
	var waiting = false;
	var flushing = false;
	var index = 0;

	/**
 * Reset the scheduler's state.
 */
	function resetSchedulerState() {
		index = queue.length = activatedChildren.length = 0;
		has = {}; {
			circular = {};
		}
		waiting = flushing = false;
	}

	/**
 * Flush both queues and run the watchers.
 */
	function flushSchedulerQueue() {
		flushing = true;
		var watcher, id;

		// Sort queue before flush.
		// This ensures that:
		// 1. Components are updated from parent to child. (because parent is always
		//    created before the child)
		// 2. A component's user watchers are run before its render watcher (because
		//    user watchers are created before the render watcher)
		// 3. If a component is destroyed during a parent component's watcher run,
		//    its watchers can be skipped.
		queue.sort(function(a, b) {
			return a.id - b.id;
		});

		// do not cache length because more watchers might be pushed
		// as we run existing watchers
		for (index = 0; index < queue.length; index++) {
			watcher = queue[index];
			id = watcher.id;
			has[id] = null;
			watcher.run();
			// in dev build, check and stop circular updates.
			if ("development" !== 'production' && has[id] != null) {
				circular[id] = (circular[id] || 0) + 1;
				if (circular[id] > MAX_UPDATE_COUNT) {
					warn('You may have an infinite update loop ' + (watcher.user ? ("in watcher with expression \"" + (watcher.expression) + "\"") : "in a component render function."), watcher.vm);
					break
				}
			}
		}

		// keep copies of post queues before resetting state
		var activatedQueue = activatedChildren.slice();
		var updatedQueue = queue.slice();

		resetSchedulerState();

		// call component updated and activated hooks
		callActivatedHooks(activatedQueue);
		callUpdatedHooks(updatedQueue);

		// devtool hook
		/* istanbul ignore if */
		if (devtools && config.devtools) {
			devtools.emit('flush');
		}
	}

	function callUpdatedHooks(queue) {
		var i = queue.length;
		while (i--) {
			var watcher = queue[i];
			var vm = watcher.vm;
			if (vm._watcher === watcher && vm._isMounted) {
				callHook(vm, 'updated');
			}
		}
	}

	/**
 * Queue a kept-alive component that was activated during patch.
 * The queue will be processed after the entire tree has been patched.
 */
	function queueActivatedComponent(vm) {
		// setting _inactive to false here so that a render function can
		// rely on checking whether it's in an inactive tree (e.g. router-view)
		vm._inactive = false;
		activatedChildren.push(vm);
	}

	function callActivatedHooks(queue) {
		for (var i = 0; i < queue.length; i++) {
			queue[i]._inactive = true;
			activateChildComponent(queue[i], true
			/* true */
			);
		}
	}

	/**
 * Push a watcher into the watcher queue.
 * Jobs with duplicate IDs will be skipped unless it's
 * pushed when the queue is being flushed.
 */
	function queueWatcher(watcher) {
		var id = watcher.id;
		if (has[id] == null) {
			has[id] = true;
			if (!flushing) {
				queue.push(watcher);
			} else {
				// if already flushing, splice the watcher based on its id
				// if already past its id, it will be run next immediately.
				var i = queue.length - 1;
				while (i > index && queue[i].id > watcher.id) {
					i--;
				}
				queue.splice(i + 1, 0, watcher);
			}
			// queue the flush
			if (!waiting) {
				waiting = true;
				nextTick(flushSchedulerQueue);
			}
		}
	}

	/*  */

	var uid$2 = 0;

	/**
 * A watcher parses an expression, collects dependencies,
 * and fires callback when the expression value changes.
 * This is used for both the $watch() api and directives.
 */
	var Watcher = function Watcher(vm, expOrFn, cb, options) {
		this.vm = vm;
		vm._watchers.push(this);
		// options
		if (options) {
			this.deep = !!options.deep;
			this.user = !!options.user;
			this.lazy = !!options.lazy;
			this.sync = !!options.sync;
		} else {
			this.deep = this.user = this.lazy = this.sync = false;
		}
		this.cb = cb;
		this.id = ++uid$2; // uid for batching
		this.active = true;
		this.dirty = this.lazy; // for lazy watchers
		this.deps = [];
		this.newDeps = [];
		this.depIds = new _Set();
		this.newDepIds = new _Set();
		this.expression = expOrFn.toString();
		// parse expression for getter
		if (typeof expOrFn === 'function') {
			this.getter = expOrFn;
		} else {
			this.getter = parsePath(expOrFn);
			if (!this.getter) {
				this.getter = function() {};
				"development" !== 'production' && warn("Failed watching path: \"" + expOrFn + "\" " + 'Watcher only accepts simple dot-delimited paths. ' + 'For full control, use a function instead.', vm);
			}
		}
		this.value = this.lazy ? undefined: this.get();
	};

	/**
 * Evaluate the getter, and re-collect dependencies.
 */
	Watcher.prototype.get = function get() {
		pushTarget(this);
		var value;
		var vm = this.vm;
		try {
			value = this.getter.call(vm, vm);
		} catch(e) {
			if (this.user) {
				handleError(e, vm, ("getter for watcher \"" + (this.expression) + "\""));
			} else {
				throw e
			}
		} finally {
			// "touch" every property so they are all tracked as
			// dependencies for deep watching
			if (this.deep) {
				traverse(value);
			}
			popTarget();
			this.cleanupDeps();
		}
		return value
	};

	/**
 * Add a dependency to this directive.
 */
	Watcher.prototype.addDep = function addDep(dep) {
		var id = dep.id;
		if (!this.newDepIds.has(id)) {
			this.newDepIds.add(id);
			this.newDeps.push(dep);
			if (!this.depIds.has(id)) {
				dep.addSub(this);
			}
		}
	};

	/**
 * Clean up for dependency collection.
 */
	Watcher.prototype.cleanupDeps = function cleanupDeps() {
		var this$1 = this;

		var i = this.deps.length;
		while (i--) {
			var dep = this$1.deps[i];
			if (!this$1.newDepIds.has(dep.id)) {
				dep.removeSub(this$1);
			}
		}
		var tmp = this.depIds;
		this.depIds = this.newDepIds;
		this.newDepIds = tmp;
		this.newDepIds.clear();
		tmp = this.deps;
		this.deps = this.newDeps;
		this.newDeps = tmp;
		this.newDeps.length = 0;
	};

	/**
 * Subscriber interface.
 * Will be called when a dependency changes.
 */
	Watcher.prototype.update = function update() {
		/* istanbul ignore else */
		if (this.lazy) {
			this.dirty = true;
		} else if (this.sync) {
			this.run();
		} else {
			queueWatcher(this);
		}
	};

	/**
 * Scheduler job interface.
 * Will be called by the scheduler.
 */
	Watcher.prototype.run = function run() {
		if (this.active) {
			var value = this.get();
			if (value !== this.value ||
			// Deep watchers and watchers on Object/Arrays should fire even
			// when the value is the same, because the value may
			// have mutated.
			isObject(value) || this.deep) {
				// set new value
				var oldValue = this.value;
				this.value = value;
				if (this.user) {
					try {
						this.cb.call(this.vm, value, oldValue);
					} catch(e) {
						handleError(e, this.vm, ("callback for watcher \"" + (this.expression) + "\""));
					}
				} else {
					this.cb.call(this.vm, value, oldValue);
				}
			}
		}
	};

	/**
 * Evaluate the value of the watcher.
 * This only gets called for lazy watchers.
 */
	Watcher.prototype.evaluate = function evaluate() {
		this.value = this.get();
		this.dirty = false;
	};

	/**
 * Depend on all deps collected by this watcher.
 */
	Watcher.prototype.depend = function depend() {
		var this$1 = this;

		var i = this.deps.length;
		while (i--) {
			this$1.deps[i].depend();
		}
	};

	/**
 * Remove self from all dependencies' subscriber list.
 */
	Watcher.prototype.teardown = function teardown() {
		var this$1 = this;

		if (this.active) {
			// remove self from vm's watcher list
			// this is a somewhat expensive operation so we skip it
			// if the vm is being destroyed.
			if (!this.vm._isBeingDestroyed) {
				remove(this.vm._watchers, this);
			}
			var i = this.deps.length;
			while (i--) {
				this$1.deps[i].removeSub(this$1);
			}
			this.active = false;
		}
	};

	/**
 * Recursively traverse an object to evoke all converted
 * getters, so that every nested property inside the object
 * is collected as a "deep" dependency.
 */
	var seenObjects = new _Set();
	function traverse(val) {
		seenObjects.clear();
		_traverse(val, seenObjects);
	}

	function _traverse(val, seen) {
		var i, keys;
		var isA = Array.isArray(val);
		if ((!isA && !isObject(val)) || !Object.isExtensible(val)) {
			return
		}
		if (val.__ob__) {
			var depId = val.__ob__.dep.id;
			if (seen.has(depId)) {
				return
			}
			seen.add(depId);
		}
		if (isA) {
			i = val.length;
			while (i--) {
				_traverse(val[i], seen);
			}
		} else {
			keys = Object.keys(val);
			i = keys.length;
			while (i--) {
				_traverse(val[keys[i]], seen);
			}
		}
	}

	/*  */

	var sharedPropertyDefinition = {
		enumerable: true,
		configurable: true,
		get: noop,
		set: noop
	};

	function proxy(target, sourceKey, key) {
		sharedPropertyDefinition.get = function proxyGetter() {
			return this[sourceKey][key]
		};
		sharedPropertyDefinition.set = function proxySetter(val) {
			this[sourceKey][key] = val;
		};
		Object.defineProperty(target, key, sharedPropertyDefinition);
	}

	function initState(vm) {
		vm._watchers = [];
		var opts = vm.$options;
		if (opts.props) {
			initProps(vm, opts.props);
		}
		if (opts.methods) {
			initMethods(vm, opts.methods);
		}
		if (opts.data) {
			initData(vm);
		} else {
			observe(vm._data = {},
			true
			/* asRootData */
			);
		}
		if (opts.computed) {
			initComputed(vm, opts.computed);
		}
		if (opts.watch && opts.watch !== nativeWatch) {
			initWatch(vm, opts.watch);
		}
	}

	function checkOptionType(vm, name) {
		var option = vm.$options[name];
		if (!isPlainObject(option)) {
			warn(("component option \"" + name + "\" should be an object."), vm);
		}
	}

	function initProps(vm, propsOptions) {
		var propsData = vm.$options.propsData || {};
		var props = vm._props = {};
		// cache prop keys so that future props updates can iterate using Array
		// instead of dynamic object key enumeration.
		var keys = vm.$options._propKeys = [];
		var isRoot = !vm.$parent;
		// root instance props should be converted
		observerState.shouldConvert = isRoot;
		var loop = function(key) {
			keys.push(key);
			var value = validateProp(key, propsOptions, propsData, vm);
			/* istanbul ignore else */
			{
				if (isReservedAttribute(key) || config.isReservedAttr(key)) {
					warn(("\"" + key + "\" is a reserved attribute and cannot be used as component prop."), vm);
				}
				defineReactive$$1(props, key, value,
				function() {
					if (vm.$parent && !isUpdatingChildComponent) {
						warn("Avoid mutating a prop directly since the value will be " + "overwritten whenever the parent component re-renders. " + "Instead, use a data or computed property based on the prop's " + "value. Prop being mutated: \"" + key + "\"", vm);
					}
				});
			}
			// static props are already proxied on the component's prototype
			// during Vue.extend(). We only need to proxy props defined at
			// instantiation here.
			if (! (key in vm)) {
				proxy(vm, "_props", key);
			}
		};

		for (var key in propsOptions) loop(key);
		observerState.shouldConvert = true;
	}

	function initData(vm) {
		var data = vm.$options.data;
		data = vm._data = typeof data === 'function' ? getData(data, vm) : data || {};
		if (!isPlainObject(data)) {
			data = {};
			"development" !== 'production' && warn('data functions should return an object:\n' + 'https://vuejs.org/v2/guide/components.html#data-Must-Be-a-Function', vm);
		}
		// proxy data on instance
		var keys = Object.keys(data);
		var props = vm.$options.props;
		var methods = vm.$options.methods;
		var i = keys.length;
		while (i--) {
			var key = keys[i]; {
				if (methods && hasOwn(methods, key)) {
					warn(("Method \"" + key + "\" has already been defined as a data property."), vm);
				}
			}
			if (props && hasOwn(props, key)) {
				"development" !== 'production' && warn("The data property \"" + key + "\" is already declared as a prop. " + "Use prop default value instead.", vm);
			} else if (!isReserved(key)) {
				proxy(vm, "_data", key);
			}
		}
		// observe data
		observe(data, true
		/* asRootData */
		);
	}

	function getData(data, vm) {
		try {
			return data.call(vm)
		} catch(e) {
			handleError(e, vm, "data()");
			return {}
		}
	}

	var computedWatcherOptions = {
		lazy: true
	};

	function initComputed(vm, computed) {
		"development" !== 'production' && checkOptionType(vm, 'computed');
		var watchers = vm._computedWatchers = Object.create(null);
		// computed properties are just getters during SSR
		var isSSR = isServerRendering();

		for (var key in computed) {
			var userDef = computed[key];
			var getter = typeof userDef === 'function' ? userDef: userDef.get;
			if ("development" !== 'production' && getter == null) {
				warn(("Getter is missing for computed property \"" + key + "\"."), vm);
			}

			if (!isSSR) {
				// create internal watcher for the computed property.
				watchers[key] = new Watcher(vm, getter || noop, noop, computedWatcherOptions);
			}

			// component-defined computed properties are already defined on the
			// component prototype. We only need to define computed properties defined
			// at instantiation here.
			if (! (key in vm)) {
				defineComputed(vm, key, userDef);
			} else {
				if (key in vm.$data) {
					warn(("The computed property \"" + key + "\" is already defined in data."), vm);
				} else if (vm.$options.props && key in vm.$options.props) {
					warn(("The computed property \"" + key + "\" is already defined as a prop."), vm);
				}
			}
		}
	}

	function defineComputed(target, key, userDef) {
		var shouldCache = !isServerRendering();
		if (typeof userDef === 'function') {
			sharedPropertyDefinition.get = shouldCache ? createComputedGetter(key) : userDef;
			sharedPropertyDefinition.set = noop;
		} else {
			sharedPropertyDefinition.get = userDef.get ? shouldCache && userDef.cache !== false ? createComputedGetter(key) : userDef.get: noop;
			sharedPropertyDefinition.set = userDef.set ? userDef.set: noop;
		}
		if ("development" !== 'production' && sharedPropertyDefinition.set === noop) {
			sharedPropertyDefinition.set = function() {
				warn(("Computed property \"" + key + "\" was assigned to but it has no setter."), this);
			};
		}
		Object.defineProperty(target, key, sharedPropertyDefinition);
	}

	function createComputedGetter(key) {
		return function computedGetter() {
			var watcher = this._computedWatchers && this._computedWatchers[key];
			if (watcher) {
				if (watcher.dirty) {
					watcher.evaluate();
				}
				if (Dep.target) {
					watcher.depend();
				}
				return watcher.value
			}
		}
	}

	function initMethods(vm, methods) {
		"development" !== 'production' && checkOptionType(vm, 'methods');
		var props = vm.$options.props;
		for (var key in methods) {
			{
				if (methods[key] == null) {
					warn("Method \"" + key + "\" has an undefined value in the component definition. " + "Did you reference the function correctly?", vm);
				}
				if (props && hasOwn(props, key)) {
					warn(("Method \"" + key + "\" has already been defined as a prop."), vm);
				}
				if ((key in vm) && isReserved(key)) {
					warn("Method \"" + key + "\" conflicts with an existing Vue instance method. " + "Avoid defining component methods that start with _ or $.");
				}
			}
			vm[key] = methods[key] == null ? noop: bind(methods[key], vm);
		}
	}

	function initWatch(vm, watch) {
		"development" !== 'production' && checkOptionType(vm, 'watch');
		for (var key in watch) {
			var handler = watch[key];
			if (Array.isArray(handler)) {
				for (var i = 0; i < handler.length; i++) {
					createWatcher(vm, key, handler[i]);
				}
			} else {
				createWatcher(vm, key, handler);
			}
		}
	}

	function createWatcher(vm, keyOrFn, handler, options) {
		if (isPlainObject(handler)) {
			options = handler;
			handler = handler.handler;
		}
		if (typeof handler === 'string') {
			handler = vm[handler];
		}
		return vm.$watch(keyOrFn, handler, options)
	}

	function stateMixin(Vue) {
		// flow somehow has problems with directly declared definition object
		// when using Object.defineProperty, so we have to procedurally build up
		// the object here.
		var dataDef = {};
		dataDef.get = function() {
			return this._data
		};
		var propsDef = {};
		propsDef.get = function() {
			return this._props
		}; {
			dataDef.set = function(newData) {
				warn('Avoid replacing instance root $data. ' + 'Use nested data properties instead.', this);
			};
			propsDef.set = function() {
				warn("$props is readonly.", this);
			};
		}
		Object.defineProperty(Vue.prototype, '$data', dataDef);
		Object.defineProperty(Vue.prototype, '$props', propsDef);

		Vue.prototype.$set = set;
		Vue.prototype.$delete = del;

		Vue.prototype.$watch = function(expOrFn, cb, options) {
			var vm = this;
			if (isPlainObject(cb)) {
				return createWatcher(vm, expOrFn, cb, options)
			}
			options = options || {};
			options.user = true;
			var watcher = new Watcher(vm, expOrFn, cb, options);
			if (options.immediate) {
				cb.call(vm, watcher.value);
			}
			return function unwatchFn() {
				watcher.teardown();
			}
		};
	}

	/*  */

	function initProvide(vm) {
		var provide = vm.$options.provide;
		if (provide) {
			vm._provided = typeof provide === 'function' ? provide.call(vm) : provide;
		}
	}

	function initInjections(vm) {
		var result = resolveInject(vm.$options.inject, vm);
		if (result) {
			observerState.shouldConvert = false;
			Object.keys(result).forEach(function(key) {
				/* istanbul ignore else */
				{
					defineReactive$$1(vm, key, result[key],
					function() {
						warn("Avoid mutating an injected value directly since the changes will be " + "overwritten whenever the provided component re-renders. " + "injection being mutated: \"" + key + "\"", vm);
					});
				}
			});
			observerState.shouldConvert = true;
		}
	}

	function resolveInject(inject, vm) {
		if (inject) {
			// inject is :any because flow is not smart enough to figure out cached
			var result = Object.create(null);
			var keys = hasSymbol ? Reflect.ownKeys(inject).filter(function(key) {
				/* istanbul ignore next */
				return Object.getOwnPropertyDescriptor(inject, key).enumerable
			}) : Object.keys(inject);

			for (var i = 0; i < keys.length; i++) {
				var key = keys[i];
				var provideKey = inject[key];
				var source = vm;
				while (source) {
					if (source._provided && provideKey in source._provided) {
						result[key] = source._provided[provideKey];
						break
					}
					source = source.$parent;
				}
				if ("development" !== 'production' && !source) {
					warn(("Injection \"" + key + "\" not found"), vm);
				}
			}
			return result
		}
	}

	/*  */

	function createFunctionalComponent(Ctor, propsData, data, context, children) {
		var props = {};
		var propOptions = Ctor.options.props;
		if (isDef(propOptions)) {
			for (var key in propOptions) {
				props[key] = validateProp(key, propOptions, propsData || emptyObject);
			}
		} else {
			if (isDef(data.attrs)) {
				mergeProps(props, data.attrs);
			}
			if (isDef(data.props)) {
				mergeProps(props, data.props);
			}
		}
		// ensure the createElement function in functional components
		// gets a unique context - this is necessary for correct named slot check
		var _context = Object.create(context);
		var h = function(a, b, c, d) {
			return createElement(_context, a, b, c, d, true);
		};
		var vnode = Ctor.options.render.call(null, h, {
			data: data,
			props: props,
			children: children,
			parent: context,
			listeners: data.on || emptyObject,
			injections: resolveInject(Ctor.options.inject, context),
			slots: function() {
				return resolveSlots(children, context);
			}
		});
		if (vnode instanceof VNode) {
			vnode.functionalContext = context;
			vnode.functionalOptions = Ctor.options;
			if (data.slot) { (vnode.data || (vnode.data = {})).slot = data.slot;
			}
		}
		return vnode
	}

	function mergeProps(to, from) {
		for (var key in from) {
			to[camelize(key)] = from[key];
		}
	}

	/*  */

	// hooks to be invoked on component VNodes during patch
	var componentVNodeHooks = {
		init: function init(vnode, hydrating, parentElm, refElm) {
			if (!vnode.componentInstance || vnode.componentInstance._isDestroyed) {
				var child = vnode.componentInstance = createComponentInstanceForVnode(vnode, activeInstance, parentElm, refElm);
				child.$mount(hydrating ? vnode.elm: undefined, hydrating);
			} else if (vnode.data.keepAlive) {
				// kept-alive components, treat as a patch
				var mountedNode = vnode; // work around flow
				componentVNodeHooks.prepatch(mountedNode, mountedNode);
			}
		},

		prepatch: function prepatch(oldVnode, vnode) {
			var options = vnode.componentOptions;
			var child = vnode.componentInstance = oldVnode.componentInstance;
			updateChildComponent(child, options.propsData, // updated props
			options.listeners, // updated listeners
			vnode, // new parent vnode
			options.children // new children
			);
		},

		insert: function insert(vnode) {
			var context = vnode.context;
			var componentInstance = vnode.componentInstance;
			if (!componentInstance._isMounted) {
				componentInstance._isMounted = true;
				callHook(componentInstance, 'mounted');
			}
			if (vnode.data.keepAlive) {
				if (context._isMounted) {
					// vue-router#1212
					// During updates, a kept-alive component's child components may
					// change, so directly walking the tree here may call activated hooks
					// on incorrect children. Instead we push them into a queue which will
					// be processed after the whole patch process ended.
					queueActivatedComponent(componentInstance);
				} else {
					activateChildComponent(componentInstance, true
					/* direct */
					);
				}
			}
		},

		destroy: function destroy(vnode) {
			var componentInstance = vnode.componentInstance;
			if (!componentInstance._isDestroyed) {
				if (!vnode.data.keepAlive) {
					componentInstance.$destroy();
				} else {
					deactivateChildComponent(componentInstance, true
					/* direct */
					);
				}
			}
		}
	};

	var hooksToMerge = Object.keys(componentVNodeHooks);

	function createComponent(Ctor, data, context, children, tag) {
		if (isUndef(Ctor)) {
			return
		}

		var baseCtor = context.$options._base;

		// plain options object: turn it into a constructor
		if (isObject(Ctor)) {
			Ctor = baseCtor.extend(Ctor);
		}

		// if at this stage it's not a constructor or an async component factory,
		// reject.
		if (typeof Ctor !== 'function') {
			{
				warn(("Invalid Component definition: " + (String(Ctor))), context);
			}
			return
		}

		// async component
		var asyncFactory;
		if (isUndef(Ctor.cid)) {
			asyncFactory = Ctor;
			Ctor = resolveAsyncComponent(asyncFactory, baseCtor, context);
			if (Ctor === undefined) {
				// return a placeholder node for async component, which is rendered
				// as a comment node but preserves all the raw information for the node.
				// the information will be used for async server-rendering and hydration.
				return createAsyncPlaceholder(asyncFactory, data, context, children, tag)
			}
		}

		data = data || {};

		// resolve constructor options in case global mixins are applied after
		// component constructor creation
		resolveConstructorOptions(Ctor);

		// transform component v-model data into props & events
		if (isDef(data.model)) {
			transformModel(Ctor.options, data);
		}

		// extract props
		var propsData = extractPropsFromVNodeData(data, Ctor, tag);

		// functional component
		if (isTrue(Ctor.options.functional)) {
			return createFunctionalComponent(Ctor, propsData, data, context, children)
		}

		// extract listeners, since these needs to be treated as
		// child component listeners instead of DOM listeners
		var listeners = data.on;
		// replace with listeners with .native modifier
		// so it gets processed during parent component patch.
		data.on = data.nativeOn;

		if (isTrue(Ctor.options.abstract)) {
			// abstract components do not keep anything
			// other than props & listeners & slot
			// work around flow
			var slot = data.slot;
			data = {};
			if (slot) {
				data.slot = slot;
			}
		}

		// merge component management hooks onto the placeholder node
		mergeHooks(data);

		// return a placeholder vnode
		var name = Ctor.options.name || tag;
		var vnode = new VNode(("vue-component-" + (Ctor.cid) + (name ? ("-" + name) : '')), data, undefined, undefined, undefined, context, {
			Ctor: Ctor,
			propsData: propsData,
			listeners: listeners,
			tag: tag,
			children: children
		},
		asyncFactory);
		return vnode
	}

	function createComponentInstanceForVnode(vnode, // we know it's MountedComponentVNode but flow doesn't
	parent, // activeInstance in lifecycle state
	parentElm, refElm) {
		var vnodeComponentOptions = vnode.componentOptions;
		var options = {
			_isComponent: true,
			parent: parent,
			propsData: vnodeComponentOptions.propsData,
			_componentTag: vnodeComponentOptions.tag,
			_parentVnode: vnode,
			_parentListeners: vnodeComponentOptions.listeners,
			_renderChildren: vnodeComponentOptions.children,
			_parentElm: parentElm || null,
			_refElm: refElm || null
		};
		// check inline-template render functions
		var inlineTemplate = vnode.data.inlineTemplate;
		if (isDef(inlineTemplate)) {
			options.render = inlineTemplate.render;
			options.staticRenderFns = inlineTemplate.staticRenderFns;
		}
		return new vnodeComponentOptions.Ctor(options)
	}

	function mergeHooks(data) {
		if (!data.hook) {
			data.hook = {};
		}
		for (var i = 0; i < hooksToMerge.length; i++) {
			var key = hooksToMerge[i];
			var fromParent = data.hook[key];
			var ours = componentVNodeHooks[key];
			data.hook[key] = fromParent ? mergeHook$1(ours, fromParent) : ours;
		}
	}

	function mergeHook$1(one, two) {
		return function(a, b, c, d) {
			one(a, b, c, d);
			two(a, b, c, d);
		}
	}

	// transform component v-model info (value and callback) into
	// prop and event handler respectively.
	function transformModel(options, data) {
		var prop = (options.model && options.model.prop) || 'value';
		var event = (options.model && options.model.event) || 'input'; (data.props || (data.props = {}))[prop] = data.model.value;
		var on = data.on || (data.on = {});
		if (isDef(on[event])) {
			on[event] = [data.model.callback].concat(on[event]);
		} else {
			on[event] = data.model.callback;
		}
	}

	/*  */

	var SIMPLE_NORMALIZE = 1;
	var ALWAYS_NORMALIZE = 2;

	// wrapper function for providing a more flexible interface
	// without getting yelled at by flow
	function createElement(context, tag, data, children, normalizationType, alwaysNormalize) {
		if (Array.isArray(data) || isPrimitive(data)) {
			normalizationType = children;
			children = data;
			data = undefined;
		}
		if (isTrue(alwaysNormalize)) {
			normalizationType = ALWAYS_NORMALIZE;
		}
		return _createElement(context, tag, data, children, normalizationType)
	}

	function _createElement(context, tag, data, children, normalizationType) {
		if (isDef(data) && isDef((data).__ob__)) {
			"development" !== 'production' && warn("Avoid using observed data object as vnode data: " + (JSON.stringify(data)) + "\n" + 'Always create fresh vnode data objects in each render!', context);
			return createEmptyVNode()
		}
		// object syntax in v-bind
		if (isDef(data) && isDef(data.is)) {
			tag = data.is;
		}
		if (!tag) {
			// in case of component :is set to falsy value
			return createEmptyVNode()
		}
		// warn against non-primitive key
		if ("development" !== 'production' && isDef(data) && isDef(data.key) && !isPrimitive(data.key)) {
			warn('Avoid using non-primitive value as key, ' + 'use string/number value instead.', context);
		}
		// support single function children as default scoped slot
		if (Array.isArray(children) && typeof children[0] === 'function') {
			data = data || {};
			data.scopedSlots = {
			default:
				children[0]
			};
			children.length = 0;
		}
		if (normalizationType === ALWAYS_NORMALIZE) {
			children = normalizeChildren(children);
		} else if (normalizationType === SIMPLE_NORMALIZE) {
			children = simpleNormalizeChildren(children);
		}
		var vnode, ns;
		if (typeof tag === 'string') {
			var Ctor;
			ns = (context.$vnode && context.$vnode.ns) || config.getTagNamespace(tag);
			if (config.isReservedTag(tag)) {
				// platform built-in elements
				vnode = new VNode(config.parsePlatformTagName(tag), data, children, undefined, undefined, context);
			} else if (isDef(Ctor = resolveAsset(context.$options, 'components', tag))) {
				// component
				vnode = createComponent(Ctor, data, context, children, tag);
			} else {
				// unknown or unlisted namespaced elements
				// check at runtime because it may get assigned a namespace when its
				// parent normalizes children
				vnode = new VNode(tag, data, children, undefined, undefined, context);
			}
		} else {
			// direct component options / constructor
			vnode = createComponent(tag, data, context, children);
		}
		if (isDef(vnode)) {
			if (ns) {
				applyNS(vnode, ns);
			}
			return vnode
		} else {
			return createEmptyVNode()
		}
	}

	function applyNS(vnode, ns) {
		vnode.ns = ns;
		if (vnode.tag === 'foreignObject') {
			// use default namespace inside foreignObject
			return
		}
		if (isDef(vnode.children)) {
			for (var i = 0,
			l = vnode.children.length; i < l; i++) {
				var child = vnode.children[i];
				if (isDef(child.tag) && isUndef(child.ns)) {
					applyNS(child, ns);
				}
			}
		}
	}

	/*  */

	/**
 * Runtime helper for rendering v-for lists.
 */
	function renderList(val, render) {
		var ret, i, l, keys, key;
		if (Array.isArray(val) || typeof val === 'string') {
			ret = new Array(val.length);
			for (i = 0, l = val.length; i < l; i++) {
				ret[i] = render(val[i], i);
			}
		} else if (typeof val === 'number') {
			ret = new Array(val);
			for (i = 0; i < val; i++) {
				ret[i] = render(i + 1, i);
			}
		} else if (isObject(val)) {
			keys = Object.keys(val);
			ret = new Array(keys.length);
			for (i = 0, l = keys.length; i < l; i++) {
				key = keys[i];
				ret[i] = render(val[key], key, i);
			}
		}
		if (isDef(ret)) { (ret)._isVList = true;
		}
		return ret
	}

	/*  */

	/**
 * Runtime helper for rendering <slot>
 */
	function renderSlot(name, fallback, props, bindObject) {
		var scopedSlotFn = this.$scopedSlots[name];
		if (scopedSlotFn) { // scoped slot
			props = props || {};
			if (bindObject) {
				props = extend(extend({},
				bindObject), props);
			}
			return scopedSlotFn(props) || fallback
		} else {
			var slotNodes = this.$slots[name];
			// warn duplicate slot usage
			if (slotNodes && "development" !== 'production') {
				slotNodes._rendered && warn("Duplicate presence of slot \"" + name + "\" found in the same render tree " + "- this will likely cause render errors.", this);
				slotNodes._rendered = true;
			}
			return slotNodes || fallback
		}
	}

	/*  */

	/**
 * Runtime helper for resolving filters
 */
	function resolveFilter(id) {
		return resolveAsset(this.$options, 'filters', id, true) || identity
	}

	/*  */

	/**
 * Runtime helper for checking keyCodes from config.
 */
	function checkKeyCodes(eventKeyCode, key, builtInAlias) {
		var keyCodes = config.keyCodes[key] || builtInAlias;
		if (Array.isArray(keyCodes)) {
			return keyCodes.indexOf(eventKeyCode) === -1
		} else {
			return keyCodes !== eventKeyCode
		}
	}

	/*  */

	/**
 * Runtime helper for merging v-bind="object" into a VNode's data.
 */
	function bindObjectProps(data, tag, value, asProp, isSync) {
		if (value) {
			if (!isObject(value)) {
				"development" !== 'production' && warn('v-bind without argument expects an Object or Array value', this);
			} else {
				if (Array.isArray(value)) {
					value = toObject(value);
				}
				var hash;
				var loop = function(key) {
					if (key === 'class' || key === 'style' || isReservedAttribute(key)) {
						hash = data;
					} else {
						var type = data.attrs && data.attrs.type;
						hash = asProp || config.mustUseProp(tag, type, key) ? data.domProps || (data.domProps = {}) : data.attrs || (data.attrs = {});
					}
					if (! (key in hash)) {
						hash[key] = value[key];

						if (isSync) {
							var on = data.on || (data.on = {});
							on[("update:" + key)] = function($event) {
								value[key] = $event;
							};
						}
					}
				};

				for (var key in value) loop(key);
			}
		}
		return data
	}

	/*  */

	/**
 * Runtime helper for rendering static trees.
 */
	function renderStatic(index, isInFor) {
		var tree = this._staticTrees[index];
		// if has already-rendered static tree and not inside v-for,
		// we can reuse the same tree by doing a shallow clone.
		if (tree && !isInFor) {
			return Array.isArray(tree) ? cloneVNodes(tree) : cloneVNode(tree)
		}
		// otherwise, render a fresh tree.
		tree = this._staticTrees[index] = this.$options.staticRenderFns[index].call(this._renderProxy);
		markStatic(tree, ("__static__" + index), false);
		return tree
	}

	/**
 * Runtime helper for v-once.
 * Effectively it means marking the node as static with a unique key.
 */
	function markOnce(tree, index, key) {
		markStatic(tree, ("__once__" + index + (key ? ("_" + key) : "")), true);
		return tree
	}

	function markStatic(tree, key, isOnce) {
		if (Array.isArray(tree)) {
			for (var i = 0; i < tree.length; i++) {
				if (tree[i] && typeof tree[i] !== 'string') {
					markStaticNode(tree[i], (key + "_" + i), isOnce);
				}
			}
		} else {
			markStaticNode(tree, key, isOnce);
		}
	}

	function markStaticNode(node, key, isOnce) {
		node.isStatic = true;
		node.key = key;
		node.isOnce = isOnce;
	}

	/*  */

	function bindObjectListeners(data, value) {
		if (value) {
			if (!isPlainObject(value)) {
				"development" !== 'production' && warn('v-on without argument expects an Object value', this);
			} else {
				var on = data.on = data.on ? extend({},
				data.on) : {};
				for (var key in value) {
					var existing = on[key];
					var ours = value[key];
					on[key] = existing ? [].concat(ours, existing) : ours;
				}
			}
		}
		return data
	}

	/*  */

	function initRender(vm) {
		vm._vnode = null; // the root of the child tree
		vm._staticTrees = null;
		var parentVnode = vm.$vnode = vm.$options._parentVnode; // the placeholder node in parent tree
		var renderContext = parentVnode && parentVnode.context;
		vm.$slots = resolveSlots(vm.$options._renderChildren, renderContext);
		vm.$scopedSlots = emptyObject;
		// bind the createElement fn to this instance
		// so that we get proper render context inside it.
		// args order: tag, data, children, normalizationType, alwaysNormalize
		// internal version is used by render functions compiled from templates
		vm._c = function(a, b, c, d) {
			return createElement(vm, a, b, c, d, false);
		};
		// normalization is always applied for the public version, used in
		// user-written render functions.
		vm.$createElement = function(a, b, c, d) {
			return createElement(vm, a, b, c, d, true);
		};

		// $attrs & $listeners are exposed for easier HOC creation.
		// they need to be reactive so that HOCs using them are always updated
		var parentData = parentVnode && parentVnode.data;

		/* istanbul ignore else */
		{
			defineReactive$$1(vm, '$attrs', parentData && parentData.attrs || emptyObject,
			function() { ! isUpdatingChildComponent && warn("$attrs is readonly.", vm);
			},
			true);
			defineReactive$$1(vm, '$listeners', vm.$options._parentListeners || emptyObject,
			function() { ! isUpdatingChildComponent && warn("$listeners is readonly.", vm);
			},
			true);
		}
	}

	function renderMixin(Vue) {
		Vue.prototype.$nextTick = function(fn) {
			return nextTick(fn, this)
		};

		Vue.prototype._render = function() {
			var vm = this;
			var ref = vm.$options;
			var render = ref.render;
			var staticRenderFns = ref.staticRenderFns;
			var _parentVnode = ref._parentVnode;

			if (vm._isMounted) {
				// if the parent didn't update, the slot nodes will be the ones from
				// last render. They need to be cloned to ensure "freshness" for this render.
				for (var key in vm.$slots) {
					var slot = vm.$slots[key];
					if (slot._rendered) {
						vm.$slots[key] = cloneVNodes(slot, true
						/* deep */
						);
					}
				}
			}

			vm.$scopedSlots = (_parentVnode && _parentVnode.data.scopedSlots) || emptyObject;

			if (staticRenderFns && !vm._staticTrees) {
				vm._staticTrees = [];
			}
			// set parent vnode. this allows render functions to have access
			// to the data on the placeholder node.
			vm.$vnode = _parentVnode;
			// render self
			var vnode;
			try {
				vnode = render.call(vm._renderProxy, vm.$createElement);
			} catch(e) {
				handleError(e, vm, "render function");
				// return error render result,
				// or previous vnode to prevent render error causing blank component
				/* istanbul ignore else */
				{
					vnode = vm.$options.renderError ? vm.$options.renderError.call(vm._renderProxy, vm.$createElement, e) : vm._vnode;
				}
			}
			// return empty vnode in case the render function errored out
			if (! (vnode instanceof VNode)) {
				if ("development" !== 'production' && Array.isArray(vnode)) {
					warn('Multiple root nodes returned from render function. Render function ' + 'should return a single root node.', vm);
				}
				vnode = createEmptyVNode();
			}
			// set parent
			vnode.parent = _parentVnode;
			return vnode
		};

		// internal render helpers.
		// these are exposed on the instance prototype to reduce generated render
		// code size.
		Vue.prototype._o = markOnce;
		Vue.prototype._n = toNumber;
		Vue.prototype._s = toString;
		Vue.prototype._l = renderList;
		Vue.prototype._t = renderSlot;
		Vue.prototype._q = looseEqual;
		Vue.prototype._i = looseIndexOf;
		Vue.prototype._m = renderStatic;
		Vue.prototype._f = resolveFilter;
		Vue.prototype._k = checkKeyCodes;
		Vue.prototype._b = bindObjectProps;
		Vue.prototype._v = createTextVNode;
		Vue.prototype._e = createEmptyVNode;
		Vue.prototype._u = resolveScopedSlots;
		Vue.prototype._g = bindObjectListeners;
	}

	/*  */

	var uid$1 = 0;

	function initMixin(Vue) {
		Vue.prototype._init = function(options) {
			var vm = this;
			// a uid
			vm._uid = uid$1++;

			var startTag, endTag;
			/* istanbul ignore if */
			if ("development" !== 'production' && config.performance && mark) {
				startTag = "vue-perf-init:" + (vm._uid);
				endTag = "vue-perf-end:" + (vm._uid);
				mark(startTag);
			}

			// a flag to avoid this being observed
			vm._isVue = true;
			// merge options
			if (options && options._isComponent) {
				// optimize internal component instantiation
				// since dynamic options merging is pretty slow, and none of the
				// internal component options needs special treatment.
				initInternalComponent(vm, options);
			} else {
				vm.$options = mergeOptions(resolveConstructorOptions(vm.constructor), options || {},
				vm);
			}
			/* istanbul ignore else */
			{
				initProxy(vm);
			}
			// expose real self
			vm._self = vm;
			initLifecycle(vm);
			initEvents(vm);
			initRender(vm);
			callHook(vm, 'beforeCreate');
			initInjections(vm); // resolve injections before data/props
			initState(vm);
			initProvide(vm); // resolve provide after data/props
			callHook(vm, 'created');

			/* istanbul ignore if */
			if ("development" !== 'production' && config.performance && mark) {
				vm._name = formatComponentName(vm, false);
				mark(endTag);
				measure(((vm._name) + " init"), startTag, endTag);
			}

			if (vm.$options.el) {
				vm.$mount(vm.$options.el);
			}
		};
	}

	function initInternalComponent(vm, options) {
		var opts = vm.$options = Object.create(vm.constructor.options);
		// doing this because it's faster than dynamic enumeration.
		opts.parent = options.parent;
		opts.propsData = options.propsData;
		opts._parentVnode = options._parentVnode;
		opts._parentListeners = options._parentListeners;
		opts._renderChildren = options._renderChildren;
		opts._componentTag = options._componentTag;
		opts._parentElm = options._parentElm;
		opts._refElm = options._refElm;
		if (options.render) {
			opts.render = options.render;
			opts.staticRenderFns = options.staticRenderFns;
		}
	}

	function resolveConstructorOptions(Ctor) {
		var options = Ctor.options;
		if (Ctor.super) {
			var superOptions = resolveConstructorOptions(Ctor.super);
			var cachedSuperOptions = Ctor.superOptions;
			if (superOptions !== cachedSuperOptions) {
				// super option changed,
				// need to resolve new options.
				Ctor.superOptions = superOptions;
				// check if there are any late-modified/attached options (#4976)
				var modifiedOptions = resolveModifiedOptions(Ctor);
				// update base extend options
				if (modifiedOptions) {
					extend(Ctor.extendOptions, modifiedOptions);
				}
				options = Ctor.options = mergeOptions(superOptions, Ctor.extendOptions);
				if (options.name) {
					options.components[options.name] = Ctor;
				}
			}
		}
		return options
	}

	function resolveModifiedOptions(Ctor) {
		var modified;
		var latest = Ctor.options;
		var extended = Ctor.extendOptions;
		var sealed = Ctor.sealedOptions;
		for (var key in latest) {
			if (latest[key] !== sealed[key]) {
				if (!modified) {
					modified = {};
				}
				modified[key] = dedupe(latest[key], extended[key], sealed[key]);
			}
		}
		return modified
	}

	function dedupe(latest, extended, sealed) {
		// compare latest and sealed to ensure lifecycle hooks won't be duplicated
		// between merges
		if (Array.isArray(latest)) {
			var res = [];
			sealed = Array.isArray(sealed) ? sealed: [sealed];
			extended = Array.isArray(extended) ? extended: [extended];
			for (var i = 0; i < latest.length; i++) {
				// push original options and not sealed options to exclude duplicated options
				if (extended.indexOf(latest[i]) >= 0 || sealed.indexOf(latest[i]) < 0) {
					res.push(latest[i]);
				}
			}
			return res
		} else {
			return latest
		}
	}

	function Vue$3(options) {
		if ("development" !== 'production' && ! (this instanceof Vue$3)) {
			warn('Vue is a constructor and should be called with the `new` keyword');
		}
		this._init(options);
	}

	initMixin(Vue$3); stateMixin(Vue$3); eventsMixin(Vue$3); lifecycleMixin(Vue$3); renderMixin(Vue$3);

	/*  */

	function initUse(Vue) {
		Vue.use = function(plugin) {
			var installedPlugins = (this._installedPlugins || (this._installedPlugins = []));
			if (installedPlugins.indexOf(plugin) > -1) {
				return this
			}

			// additional parameters
			var args = toArray(arguments, 1);
			args.unshift(this);
			if (typeof plugin.install === 'function') {
				plugin.install.apply(plugin, args);
			} else if (typeof plugin === 'function') {
				plugin.apply(null, args);
			}
			installedPlugins.push(plugin);
			return this
		};
	}

	/*  */

	function initMixin$1(Vue) {
		Vue.mixin = function(mixin) {
			this.options = mergeOptions(this.options, mixin);
			return this
		};
	}

	/*  */

	function initExtend(Vue) {
		/**
   * Each instance constructor, including Vue, has a unique
   * cid. This enables us to create wrapped "child
   * constructors" for prototypal inheritance and cache them.
   */
		Vue.cid = 0;
		var cid = 1;

		/**
   * Class inheritance
   */
		Vue.extend = function(extendOptions) {
			extendOptions = extendOptions || {};
			var Super = this;
			var SuperId = Super.cid;
			var cachedCtors = extendOptions._Ctor || (extendOptions._Ctor = {});
			if (cachedCtors[SuperId]) {
				return cachedCtors[SuperId]
			}

			var name = extendOptions.name || Super.options.name; {
				if (!/^[a-zA-Z][\w-]*$/.test(name)) {
					warn('Invalid component name: "' + name + '". Component names ' + 'can only contain alphanumeric characters and the hyphen, ' + 'and must start with a letter.');
				}
			}

			var Sub = function VueComponent(options) {
				this._init(options);
			};
			Sub.prototype = Object.create(Super.prototype);
			Sub.prototype.constructor = Sub;
			Sub.cid = cid++;
			Sub.options = mergeOptions(Super.options, extendOptions);
			Sub['super'] = Super;

			// For props and computed properties, we define the proxy getters on
			// the Vue instances at extension time, on the extended prototype. This
			// avoids Object.defineProperty calls for each instance created.
			if (Sub.options.props) {
				initProps$1(Sub);
			}
			if (Sub.options.computed) {
				initComputed$1(Sub);
			}

			// allow further extension/mixin/plugin usage
			Sub.extend = Super.extend;
			Sub.mixin = Super.mixin;
			Sub.use = Super.use;

			// create asset registers, so extended classes
			// can have their private assets too.
			ASSET_TYPES.forEach(function(type) {
				Sub[type] = Super[type];
			});
			// enable recursive self-lookup
			if (name) {
				Sub.options.components[name] = Sub;
			}

			// keep a reference to the super options at extension time.
			// later at instantiation we can check if Super's options have
			// been updated.
			Sub.superOptions = Super.options;
			Sub.extendOptions = extendOptions;
			Sub.sealedOptions = extend({},
			Sub.options);

			// cache constructor
			cachedCtors[SuperId] = Sub;
			return Sub
		};
	}

	function initProps$1(Comp) {
		var props = Comp.options.props;
		for (var key in props) {
			proxy(Comp.prototype, "_props", key);
		}
	}

	function initComputed$1(Comp) {
		var computed = Comp.options.computed;
		for (var key in computed) {
			defineComputed(Comp.prototype, key, computed[key]);
		}
	}

	/*  */

	function initAssetRegisters(Vue) {
		/**
   * Create asset registration methods.
   */
		ASSET_TYPES.forEach(function(type) {
			Vue[type] = function(id, definition) {
				if (!definition) {
					return this.options[type + 's'][id]
				} else {
					/* istanbul ignore if */
					{
						if (type === 'component' && config.isReservedTag(id)) {
							warn('Do not use built-in or reserved HTML elements as component ' + 'id: ' + id);
						}
					}
					if (type === 'component' && isPlainObject(definition)) {
						definition.name = definition.name || id;
						definition = this.options._base.extend(definition);
					}
					if (type === 'directive' && typeof definition === 'function') {
						definition = {
							bind: definition,
							update: definition
						};
					}
					this.options[type + 's'][id] = definition;
					return definition
				}
			};
		});
	}

	/*  */

	var patternTypes = [String, RegExp, Array];

	function getComponentName(opts) {
		return opts && (opts.Ctor.options.name || opts.tag)
	}

	function matches(pattern, name) {
		if (Array.isArray(pattern)) {
			return pattern.indexOf(name) > -1
		} else if (typeof pattern === 'string') {
			return pattern.split(',').indexOf(name) > -1
		} else if (isRegExp(pattern)) {
			return pattern.test(name)
		}
		/* istanbul ignore next */
		return false
	}

	function pruneCache(cache, current, filter) {
		for (var key in cache) {
			var cachedNode = cache[key];
			if (cachedNode) {
				var name = getComponentName(cachedNode.componentOptions);
				if (name && !filter(name)) {
					if (cachedNode !== current) {
						pruneCacheEntry(cachedNode);
					}
					cache[key] = null;
				}
			}
		}
	}

	function pruneCacheEntry(vnode) {
		if (vnode) {
			vnode.componentInstance.$destroy();
		}
	}

	var KeepAlive = {
		name: 'keep-alive',
		abstract: true,

		props: {
			include: patternTypes,
			exclude: patternTypes
		},

		created: function created() {
			this.cache = Object.create(null);
		},

		destroyed: function destroyed() {
			var this$1 = this;

			for (var key in this$1.cache) {
				pruneCacheEntry(this$1.cache[key]);
			}
		},

		watch: {
			include: function include(val) {
				pruneCache(this.cache, this._vnode,
				function(name) {
					return matches(val, name);
				});
			},
			exclude: function exclude(val) {
				pruneCache(this.cache, this._vnode,
				function(name) {
					return ! matches(val, name);
				});
			}
		},

		render: function render() {
			var vnode = getFirstComponentChild(this.$slots.
		default);
			var componentOptions = vnode && vnode.componentOptions;
			if (componentOptions) {
				// check pattern
				var name = getComponentName(componentOptions);
				if (name && ((this.include && !matches(this.include, name)) || (this.exclude && matches(this.exclude, name)))) {
					return vnode
				}
				var key = vnode.key == null
				// same constructor may get registered as different local components
				// so cid alone is not enough (#3269)
				? componentOptions.Ctor.cid + (componentOptions.tag ? ("::" + (componentOptions.tag)) : '') : vnode.key;
				if (this.cache[key]) {
					vnode.componentInstance = this.cache[key].componentInstance;
				} else {
					this.cache[key] = vnode;
				}
				vnode.data.keepAlive = true;
			}
			return vnode
		}
	};

	var builtInComponents = {
		KeepAlive: KeepAlive
	};

	/*  */

	function initGlobalAPI(Vue) {
		// config
		var configDef = {};
		configDef.get = function() {
			return config;
		}; {
			configDef.set = function() {
				warn('Do not replace the Vue.config object, set individual fields instead.');
			};
		}
		Object.defineProperty(Vue, 'config', configDef);

		// exposed util methods.
		// NOTE: these are not considered part of the public API - avoid relying on
		// them unless you are aware of the risk.
		Vue.util = {
			warn: warn,
			extend: extend,
			mergeOptions: mergeOptions,
			defineReactive: defineReactive$$1
		};

		Vue.set = set;
		Vue.delete = del;
		Vue.nextTick = nextTick;

		Vue.options = Object.create(null);
		ASSET_TYPES.forEach(function(type) {
			Vue.options[type + 's'] = Object.create(null);
		});

		// this is used to identify the "base" constructor to extend all plain-object
		// components with in Weex's multi-instance scenarios.
		Vue.options._base = Vue;

		extend(Vue.options.components, builtInComponents);

		initUse(Vue);
		initMixin$1(Vue);
		initExtend(Vue);
		initAssetRegisters(Vue);
	}

	initGlobalAPI(Vue$3);

	Object.defineProperty(Vue$3.prototype, '$isServer', {
		get: isServerRendering
	});

	Object.defineProperty(Vue$3.prototype, '$ssrContext', {
		get: function get() {
			/* istanbul ignore next */
			return this.$vnode && this.$vnode.ssrContext
		}
	});

	Vue$3.version = '2.4.4';

	/*  */

	// these are reserved for web because they are directly compiled away
	// during template compilation
	var isReservedAttr = makeMap('style,class');

	// attributes that should be using props for binding
	var acceptValue = makeMap('input,textarea,option,select,progress');
	var mustUseProp = function(tag, type, attr) {
		return ((attr === 'value' && acceptValue(tag)) && type !== 'button' || (attr === 'selected' && tag === 'option') || (attr === 'checked' && tag === 'input') || (attr === 'muted' && tag === 'video'))
	};

	var isEnumeratedAttr = makeMap('contenteditable,draggable,spellcheck');

	var isBooleanAttr = makeMap('allowfullscreen,async,autofocus,autoplay,checked,compact,controls,declare,' + 'default,defaultchecked,defaultmuted,defaultselected,defer,disabled,' + 'enabled,formnovalidate,hidden,indeterminate,inert,ismap,itemscope,loop,multiple,' + 'muted,nohref,noresize,noshade,novalidate,nowrap,open,pauseonexit,readonly,' + 'required,reversed,scoped,seamless,selected,sortable,translate,' + 'truespeed,typemustmatch,visible');

	var xlinkNS = 'http://www.w3.org/1999/xlink';

	var isXlink = function(name) {
		return name.charAt(5) === ':' && name.slice(0, 5) === 'xlink'
	};

	var getXlinkProp = function(name) {
		return isXlink(name) ? name.slice(6, name.length) : ''
	};

	var isFalsyAttrValue = function(val) {
		return val == null || val === false
	};

	/*  */

	function genClassForVnode(vnode) {
		var data = vnode.data;
		var parentNode = vnode;
		var childNode = vnode;
		while (isDef(childNode.componentInstance)) {
			childNode = childNode.componentInstance._vnode;
			if (childNode.data) {
				data = mergeClassData(childNode.data, data);
			}
		}
		while (isDef(parentNode = parentNode.parent)) {
			if (parentNode.data) {
				data = mergeClassData(data, parentNode.data);
			}
		}
		return renderClass(data.staticClass, data.class)
	}

	function mergeClassData(child, parent) {
		return {
			staticClass: concat(child.staticClass, parent.staticClass),
			class: isDef(child.class) ? [child.class, parent.class] : parent.class
		}
	}

	function renderClass(staticClass, dynamicClass) {
		if (isDef(staticClass) || isDef(dynamicClass)) {
			return concat(staticClass, stringifyClass(dynamicClass))
		}
		/* istanbul ignore next */
		return ''
	}

	function concat(a, b) {
		return a ? b ? (a + ' ' + b) : a: (b || '')
	}

	function stringifyClass(value) {
		if (Array.isArray(value)) {
			return stringifyArray(value)
		}
		if (isObject(value)) {
			return stringifyObject(value)
		}
		if (typeof value === 'string') {
			return value
		}
		/* istanbul ignore next */
		return ''
	}

	function stringifyArray(value) {
		var res = '';
		var stringified;
		for (var i = 0,
		l = value.length; i < l; i++) {
			if (isDef(stringified = stringifyClass(value[i])) && stringified !== '') {
				if (res) {
					res += ' ';
				}
				res += stringified;
			}
		}
		return res
	}

	function stringifyObject(value) {
		var res = '';
		for (var key in value) {
			if (value[key]) {
				if (res) {
					res += ' ';
				}
				res += key;
			}
		}
		return res
	}

	/*  */

	var namespaceMap = {
		svg: 'http://www.w3.org/2000/svg',
		math: 'http://www.w3.org/1998/Math/MathML'
	};

	var isHTMLTag = makeMap('html,body,base,head,link,meta,style,title,' + 'address,article,aside,footer,header,h1,h2,h3,h4,h5,h6,hgroup,nav,section,' + 'div,dd,dl,dt,figcaption,figure,picture,hr,img,li,main,ol,p,pre,ul,' + 'a,b,abbr,bdi,bdo,br,cite,code,data,dfn,em,i,kbd,mark,q,rp,rt,rtc,ruby,' + 's,samp,small,span,strong,sub,sup,time,u,var,wbr,area,audio,map,track,video,' + 'embed,object,param,source,canvas,script,noscript,del,ins,' + 'caption,col,colgroup,table,thead,tbody,td,th,tr,' + 'button,datalist,fieldset,form,input,label,legend,meter,optgroup,option,' + 'output,progress,select,textarea,' + 'details,dialog,menu,menuitem,summary,' + 'content,element,shadow,template,blockquote,iframe,tfoot');

	// this map is intentionally selective, only covering SVG elements that may
	// contain child elements.
	var isSVG = makeMap('svg,animate,circle,clippath,cursor,defs,desc,ellipse,filter,font-face,' + 'foreignObject,g,glyph,image,line,marker,mask,missing-glyph,path,pattern,' + 'polygon,polyline,rect,switch,symbol,text,textpath,tspan,use,view', true);

	var isPreTag = function(tag) {
		return tag === 'pre';
	};

	var isReservedTag = function(tag) {
		return isHTMLTag(tag) || isSVG(tag)
	};

	function getTagNamespace(tag) {
		if (isSVG(tag)) {
			return 'svg'
		}
		// basic support for MathML
		// note it doesn't support other MathML elements being component roots
		if (tag === 'math') {
			return 'math'
		}
	}

	var unknownElementCache = Object.create(null);
	function isUnknownElement(tag) {
		/* istanbul ignore if */
		if (!inBrowser) {
			return true
		}
		if (isReservedTag(tag)) {
			return false
		}
		tag = tag.toLowerCase();
		/* istanbul ignore if */
		if (unknownElementCache[tag] != null) {
			return unknownElementCache[tag]
		}
		var el = document.createElement(tag);
		if (tag.indexOf('-') > -1) {
			// http://stackoverflow.com/a/28210364/1070244
			return (unknownElementCache[tag] = (el.constructor === window.HTMLUnknownElement || el.constructor === window.HTMLElement))
		} else {
			return (unknownElementCache[tag] = /HTMLUnknownElement/.test(el.toString()))
		}
	}

	var isTextInputType = makeMap('text,number,password,search,email,tel,url');

	/*  */

	/**
 * Query an element selector if it's not an element already.
 */
	function query(el) {
		if (typeof el === 'string') {
			var selected = document.querySelector(el);
			if (!selected) {
				"development" !== 'production' && warn('Cannot find element: ' + el);
				return document.createElement('div')
			}
			return selected
		} else {
			return el
		}
	}

	/*  */

	function createElement$1(tagName, vnode) {
		var elm = document.createElement(tagName);
		if (tagName !== 'select') {
			return elm
		}
		// false or null will remove the attribute but undefined will not
		if (vnode.data && vnode.data.attrs && vnode.data.attrs.multiple !== undefined) {
			elm.setAttribute('multiple', 'multiple');
		}
		return elm
	}

	function createElementNS(namespace, tagName) {
		return document.createElementNS(namespaceMap[namespace], tagName)
	}

	function createTextNode(text) {
		return document.createTextNode(text)
	}

	function createComment(text) {
		return document.createComment(text)
	}

	function insertBefore(parentNode, newNode, referenceNode) {
		parentNode.insertBefore(newNode, referenceNode);
	}

	function removeChild(node, child) {
		node.removeChild(child);
	}

	function appendChild(node, child) {
		node.appendChild(child);
	}

	function parentNode(node) {
		return node.parentNode
	}

	function nextSibling(node) {
		return node.nextSibling
	}

	function tagName(node) {
		return node.tagName
	}

	function setTextContent(node, text) {
		node.textContent = text;
	}

	function setAttribute(node, key, val) {
		node.setAttribute(key, val);
	}

	var nodeOps = Object.freeze({
		createElement: createElement$1,
		createElementNS: createElementNS,
		createTextNode: createTextNode,
		createComment: createComment,
		insertBefore: insertBefore,
		removeChild: removeChild,
		appendChild: appendChild,
		parentNode: parentNode,
		nextSibling: nextSibling,
		tagName: tagName,
		setTextContent: setTextContent,
		setAttribute: setAttribute
	});

	/*  */

	var ref = {
		create: function create(_, vnode) {
			registerRef(vnode);
		},
		update: function update(oldVnode, vnode) {
			if (oldVnode.data.ref !== vnode.data.ref) {
				registerRef(oldVnode, true);
				registerRef(vnode);
			}
		},
		destroy: function destroy(vnode) {
			registerRef(vnode, true);
		}
	};

	function registerRef(vnode, isRemoval) {
		var key = vnode.data.ref;
		if (!key) {
			return
		}

		var vm = vnode.context;
		var ref = vnode.componentInstance || vnode.elm;
		var refs = vm.$refs;
		if (isRemoval) {
			if (Array.isArray(refs[key])) {
				remove(refs[key], ref);
			} else if (refs[key] === ref) {
				refs[key] = undefined;
			}
		} else {
			if (vnode.data.refInFor) {
				if (!Array.isArray(refs[key])) {
					refs[key] = [ref];
				} else if (refs[key].indexOf(ref) < 0) {
					// $flow-disable-line
					refs[key].push(ref);
				}
			} else {
				refs[key] = ref;
			}
		}
	}

	/**
 * Virtual DOM patching algorithm based on Snabbdom by
 * Simon Friis Vindum (@paldepind)
 * Licensed under the MIT License
 * https://github.com/paldepind/snabbdom/blob/master/LICENSE
 *
 * modified by Evan You (@yyx990803)
 *
 * Not type-checking this because this file is perf-critical and the cost
 * of making flow understand it is not worth it.
 */

	var emptyNode = new VNode('', {},
	[]);

	var hooks = ['create', 'activate', 'update', 'remove', 'destroy'];

	function sameVnode(a, b) {
		return (a.key === b.key && ((a.tag === b.tag && a.isComment === b.isComment && isDef(a.data) === isDef(b.data) && sameInputType(a, b)) || (isTrue(a.isAsyncPlaceholder) && a.asyncFactory === b.asyncFactory && isUndef(b.asyncFactory.error))))
	}

	function sameInputType(a, b) {
		if (a.tag !== 'input') {
			return true
		}
		var i;
		var typeA = isDef(i = a.data) && isDef(i = i.attrs) && i.type;
		var typeB = isDef(i = b.data) && isDef(i = i.attrs) && i.type;
		return typeA === typeB || isTextInputType(typeA) && isTextInputType(typeB)
	}

	function createKeyToOldIdx(children, beginIdx, endIdx) {
		var i, key;
		var map = {};
		for (i = beginIdx; i <= endIdx; ++i) {
			key = children[i].key;
			if (isDef(key)) {
				map[key] = i;
			}
		}
		return map
	}

	function createPatchFunction(backend) {
		var i, j;
		var cbs = {};

		var modules = backend.modules;
		var nodeOps = backend.nodeOps;

		for (i = 0; i < hooks.length; ++i) {
			cbs[hooks[i]] = [];
			for (j = 0; j < modules.length; ++j) {
				if (isDef(modules[j][hooks[i]])) {
					cbs[hooks[i]].push(modules[j][hooks[i]]);
				}
			}
		}

		function emptyNodeAt(elm) {
			return new VNode(nodeOps.tagName(elm).toLowerCase(), {},
			[], undefined, elm)
		}

		function createRmCb(childElm, listeners) {
			function remove$$1() {
				if (--remove$$1.listeners === 0) {
					removeNode(childElm);
				}
			}
			remove$$1.listeners = listeners;
			return remove$$1
		}

		function removeNode(el) {
			var parent = nodeOps.parentNode(el);
			// element may have already been removed due to v-html / v-text
			if (isDef(parent)) {
				nodeOps.removeChild(parent, el);
			}
		}

		var inPre = 0;
		function createElm(vnode, insertedVnodeQueue, parentElm, refElm, nested) {
			vnode.isRootInsert = !nested; // for transition enter check
			if (createComponent(vnode, insertedVnodeQueue, parentElm, refElm)) {
				return
			}

			var data = vnode.data;
			var children = vnode.children;
			var tag = vnode.tag;
			if (isDef(tag)) {
				{
					if (data && data.pre) {
						inPre++;
					}
					if (!inPre && !vnode.ns && !(config.ignoredElements.length && config.ignoredElements.indexOf(tag) > -1) && config.isUnknownElement(tag)) {
						warn('Unknown custom element: <' + tag + '> - did you ' + 'register the component correctly? For recursive components, ' + 'make sure to provide the "name" option.', vnode.context);
					}
				}
				vnode.elm = vnode.ns ? nodeOps.createElementNS(vnode.ns, tag) : nodeOps.createElement(tag, vnode);
				setScope(vnode);

				/* istanbul ignore if */
				{
					createChildren(vnode, children, insertedVnodeQueue);
					if (isDef(data)) {
						invokeCreateHooks(vnode, insertedVnodeQueue);
					}
					insert(parentElm, vnode.elm, refElm);
				}

				if ("development" !== 'production' && data && data.pre) {
					inPre--;
				}
			} else if (isTrue(vnode.isComment)) {
				vnode.elm = nodeOps.createComment(vnode.text);
				insert(parentElm, vnode.elm, refElm);
			} else {
				vnode.elm = nodeOps.createTextNode(vnode.text);
				insert(parentElm, vnode.elm, refElm);
			}
		}

		function createComponent(vnode, insertedVnodeQueue, parentElm, refElm) {
			var i = vnode.data;
			if (isDef(i)) {
				var isReactivated = isDef(vnode.componentInstance) && i.keepAlive;
				if (isDef(i = i.hook) && isDef(i = i.init)) {
					i(vnode, false
					/* hydrating */
					, parentElm, refElm);
				}
				// after calling the init hook, if the vnode is a child component
				// it should've created a child instance and mounted it. the child
				// component also has set the placeholder vnode's elm.
				// in that case we can just return the element and be done.
				if (isDef(vnode.componentInstance)) {
					initComponent(vnode, insertedVnodeQueue);
					if (isTrue(isReactivated)) {
						reactivateComponent(vnode, insertedVnodeQueue, parentElm, refElm);
					}
					return true
				}
			}
		}

		function initComponent(vnode, insertedVnodeQueue) {
			if (isDef(vnode.data.pendingInsert)) {
				insertedVnodeQueue.push.apply(insertedVnodeQueue, vnode.data.pendingInsert);
				vnode.data.pendingInsert = null;
			}
			vnode.elm = vnode.componentInstance.$el;
			if (isPatchable(vnode)) {
				invokeCreateHooks(vnode, insertedVnodeQueue);
				setScope(vnode);
			} else {
				// empty component root.
				// skip all element-related modules except for ref (#3455)
				registerRef(vnode);
				// make sure to invoke the insert hook
				insertedVnodeQueue.push(vnode);
			}
		}

		function reactivateComponent(vnode, insertedVnodeQueue, parentElm, refElm) {
			var i;
			// hack for #4339: a reactivated component with inner transition
			// does not trigger because the inner node's created hooks are not called
			// again. It's not ideal to involve module-specific logic in here but
			// there doesn't seem to be a better way to do it.
			var innerNode = vnode;
			while (innerNode.componentInstance) {
				innerNode = innerNode.componentInstance._vnode;
				if (isDef(i = innerNode.data) && isDef(i = i.transition)) {
					for (i = 0; i < cbs.activate.length; ++i) {
						cbs.activate[i](emptyNode, innerNode);
					}
					insertedVnodeQueue.push(innerNode);
					break
				}
			}
			// unlike a newly created component,
			// a reactivated keep-alive component doesn't insert itself
			insert(parentElm, vnode.elm, refElm);
		}

		function insert(parent, elm, ref$$1) {
			if (isDef(parent)) {
				if (isDef(ref$$1)) {
					if (ref$$1.parentNode === parent) {
						nodeOps.insertBefore(parent, elm, ref$$1);
					}
				} else {
					nodeOps.appendChild(parent, elm);
				}
			}
		}

		function createChildren(vnode, children, insertedVnodeQueue) {
			if (Array.isArray(children)) {
				for (var i = 0; i < children.length; ++i) {
					createElm(children[i], insertedVnodeQueue, vnode.elm, null, true);
				}
			} else if (isPrimitive(vnode.text)) {
				nodeOps.appendChild(vnode.elm, nodeOps.createTextNode(vnode.text));
			}
		}

		function isPatchable(vnode) {
			while (vnode.componentInstance) {
				vnode = vnode.componentInstance._vnode;
			}
			return isDef(vnode.tag)
		}

		function invokeCreateHooks(vnode, insertedVnodeQueue) {
			for (var i$1 = 0; i$1 < cbs.create.length; ++i$1) {
				cbs.create[i$1](emptyNode, vnode);
			}
			i = vnode.data.hook; // Reuse variable
			if (isDef(i)) {
				if (isDef(i.create)) {
					i.create(emptyNode, vnode);
				}
				if (isDef(i.insert)) {
					insertedVnodeQueue.push(vnode);
				}
			}
		}

		// set scope id attribute for scoped CSS.
		// this is implemented as a special case to avoid the overhead
		// of going through the normal attribute patching process.
		function setScope(vnode) {
			var i;
			var ancestor = vnode;
			while (ancestor) {
				if (isDef(i = ancestor.context) && isDef(i = i.$options._scopeId)) {
					nodeOps.setAttribute(vnode.elm, i, '');
				}
				ancestor = ancestor.parent;
			}
			// for slot content they should also get the scopeId from the host instance.
			if (isDef(i = activeInstance) && i !== vnode.context && isDef(i = i.$options._scopeId)) {
				nodeOps.setAttribute(vnode.elm, i, '');
			}
		}

		function addVnodes(parentElm, refElm, vnodes, startIdx, endIdx, insertedVnodeQueue) {
			for (; startIdx <= endIdx; ++startIdx) {
				createElm(vnodes[startIdx], insertedVnodeQueue, parentElm, refElm);
			}
		}

		function invokeDestroyHook(vnode) {
			var i, j;
			var data = vnode.data;
			if (isDef(data)) {
				if (isDef(i = data.hook) && isDef(i = i.destroy)) {
					i(vnode);
				}
				for (i = 0; i < cbs.destroy.length; ++i) {
					cbs.destroy[i](vnode);
				}
			}
			if (isDef(i = vnode.children)) {
				for (j = 0; j < vnode.children.length; ++j) {
					invokeDestroyHook(vnode.children[j]);
				}
			}
		}

		function removeVnodes(parentElm, vnodes, startIdx, endIdx) {
			for (; startIdx <= endIdx; ++startIdx) {
				var ch = vnodes[startIdx];
				if (isDef(ch)) {
					if (isDef(ch.tag)) {
						removeAndInvokeRemoveHook(ch);
						invokeDestroyHook(ch);
					} else { // Text node
						removeNode(ch.elm);
					}
				}
			}
		}

		function removeAndInvokeRemoveHook(vnode, rm) {
			if (isDef(rm) || isDef(vnode.data)) {
				var i;
				var listeners = cbs.remove.length + 1;
				if (isDef(rm)) {
					// we have a recursively passed down rm callback
					// increase the listeners count
					rm.listeners += listeners;
				} else {
					// directly removing
					rm = createRmCb(vnode.elm, listeners);
				}
				// recursively invoke hooks on child component root node
				if (isDef(i = vnode.componentInstance) && isDef(i = i._vnode) && isDef(i.data)) {
					removeAndInvokeRemoveHook(i, rm);
				}
				for (i = 0; i < cbs.remove.length; ++i) {
					cbs.remove[i](vnode, rm);
				}
				if (isDef(i = vnode.data.hook) && isDef(i = i.remove)) {
					i(vnode, rm);
				} else {
					rm();
				}
			} else {
				removeNode(vnode.elm);
			}
		}

		function updateChildren(parentElm, oldCh, newCh, insertedVnodeQueue, removeOnly) {
			var oldStartIdx = 0;
			var newStartIdx = 0;
			var oldEndIdx = oldCh.length - 1;
			var oldStartVnode = oldCh[0];
			var oldEndVnode = oldCh[oldEndIdx];
			var newEndIdx = newCh.length - 1;
			var newStartVnode = newCh[0];
			var newEndVnode = newCh[newEndIdx];
			var oldKeyToIdx, idxInOld, elmToMove, refElm;

			// removeOnly is a special flag used only by <transition-group>
			// to ensure removed elements stay in correct relative positions
			// during leaving transitions
			var canMove = !removeOnly;

			while (oldStartIdx <= oldEndIdx && newStartIdx <= newEndIdx) {
				if (isUndef(oldStartVnode)) {
					oldStartVnode = oldCh[++oldStartIdx]; // Vnode has been moved left
				} else if (isUndef(oldEndVnode)) {
					oldEndVnode = oldCh[--oldEndIdx];
				} else if (sameVnode(oldStartVnode, newStartVnode)) {
					patchVnode(oldStartVnode, newStartVnode, insertedVnodeQueue);
					oldStartVnode = oldCh[++oldStartIdx];
					newStartVnode = newCh[++newStartIdx];
				} else if (sameVnode(oldEndVnode, newEndVnode)) {
					patchVnode(oldEndVnode, newEndVnode, insertedVnodeQueue);
					oldEndVnode = oldCh[--oldEndIdx];
					newEndVnode = newCh[--newEndIdx];
				} else if (sameVnode(oldStartVnode, newEndVnode)) { // Vnode moved right
					patchVnode(oldStartVnode, newEndVnode, insertedVnodeQueue);
					canMove && nodeOps.insertBefore(parentElm, oldStartVnode.elm, nodeOps.nextSibling(oldEndVnode.elm));
					oldStartVnode = oldCh[++oldStartIdx];
					newEndVnode = newCh[--newEndIdx];
				} else if (sameVnode(oldEndVnode, newStartVnode)) { // Vnode moved left
					patchVnode(oldEndVnode, newStartVnode, insertedVnodeQueue);
					canMove && nodeOps.insertBefore(parentElm, oldEndVnode.elm, oldStartVnode.elm);
					oldEndVnode = oldCh[--oldEndIdx];
					newStartVnode = newCh[++newStartIdx];
				} else {
					if (isUndef(oldKeyToIdx)) {
						oldKeyToIdx = createKeyToOldIdx(oldCh, oldStartIdx, oldEndIdx);
					}
					idxInOld = isDef(newStartVnode.key) ? oldKeyToIdx[newStartVnode.key] : findIdxInOld(newStartVnode, oldCh, oldStartIdx, oldEndIdx);
					if (isUndef(idxInOld)) { // New element
						createElm(newStartVnode, insertedVnodeQueue, parentElm, oldStartVnode.elm);
					} else {
						elmToMove = oldCh[idxInOld];
						/* istanbul ignore if */
						if ("development" !== 'production' && !elmToMove) {
							warn('It seems there are duplicate keys that is causing an update error. ' + 'Make sure each v-for item has a unique key.');
						}
						if (sameVnode(elmToMove, newStartVnode)) {
							patchVnode(elmToMove, newStartVnode, insertedVnodeQueue);
							oldCh[idxInOld] = undefined;
							canMove && nodeOps.insertBefore(parentElm, elmToMove.elm, oldStartVnode.elm);
						} else {
							// same key but different element. treat as new element
							createElm(newStartVnode, insertedVnodeQueue, parentElm, oldStartVnode.elm);
						}
					}
					newStartVnode = newCh[++newStartIdx];
				}
			}
			if (oldStartIdx > oldEndIdx) {
				refElm = isUndef(newCh[newEndIdx + 1]) ? null: newCh[newEndIdx + 1].elm;
				addVnodes(parentElm, refElm, newCh, newStartIdx, newEndIdx, insertedVnodeQueue);
			} else if (newStartIdx > newEndIdx) {
				removeVnodes(parentElm, oldCh, oldStartIdx, oldEndIdx);
			}
		}

		function findIdxInOld(node, oldCh, start, end) {
			for (var i = start; i < end; i++) {
				var c = oldCh[i];
				if (isDef(c) && sameVnode(node, c)) {
					return i
				}
			}
		}

		function patchVnode(oldVnode, vnode, insertedVnodeQueue, removeOnly) {
			if (oldVnode === vnode) {
				return
			}

			var elm = vnode.elm = oldVnode.elm;

			if (isTrue(oldVnode.isAsyncPlaceholder)) {
				if (isDef(vnode.asyncFactory.resolved)) {
					hydrate(oldVnode.elm, vnode, insertedVnodeQueue);
				} else {
					vnode.isAsyncPlaceholder = true;
				}
				return
			}

			// reuse element for static trees.
			// note we only do this if the vnode is cloned -
			// if the new node is not cloned it means the render functions have been
			// reset by the hot-reload-api and we need to do a proper re-render.
			if (isTrue(vnode.isStatic) && isTrue(oldVnode.isStatic) && vnode.key === oldVnode.key && (isTrue(vnode.isCloned) || isTrue(vnode.isOnce))) {
				vnode.componentInstance = oldVnode.componentInstance;
				return
			}

			var i;
			var data = vnode.data;
			if (isDef(data) && isDef(i = data.hook) && isDef(i = i.prepatch)) {
				i(oldVnode, vnode);
			}

			var oldCh = oldVnode.children;
			var ch = vnode.children;
			if (isDef(data) && isPatchable(vnode)) {
				for (i = 0; i < cbs.update.length; ++i) {
					cbs.update[i](oldVnode, vnode);
				}
				if (isDef(i = data.hook) && isDef(i = i.update)) {
					i(oldVnode, vnode);
				}
			}
			if (isUndef(vnode.text)) {
				if (isDef(oldCh) && isDef(ch)) {
					if (oldCh !== ch) {
						updateChildren(elm, oldCh, ch, insertedVnodeQueue, removeOnly);
					}
				} else if (isDef(ch)) {
					if (isDef(oldVnode.text)) {
						nodeOps.setTextContent(elm, '');
					}
					addVnodes(elm, null, ch, 0, ch.length - 1, insertedVnodeQueue);
				} else if (isDef(oldCh)) {
					removeVnodes(elm, oldCh, 0, oldCh.length - 1);
				} else if (isDef(oldVnode.text)) {
					nodeOps.setTextContent(elm, '');
				}
			} else if (oldVnode.text !== vnode.text) {
				nodeOps.setTextContent(elm, vnode.text);
			}
			if (isDef(data)) {
				if (isDef(i = data.hook) && isDef(i = i.postpatch)) {
					i(oldVnode, vnode);
				}
			}
		}

		function invokeInsertHook(vnode, queue, initial) {
			// delay insert hooks for component root nodes, invoke them after the
			// element is really inserted
			if (isTrue(initial) && isDef(vnode.parent)) {
				vnode.parent.data.pendingInsert = queue;
			} else {
				for (var i = 0; i < queue.length; ++i) {
					queue[i].data.hook.insert(queue[i]);
				}
			}
		}

		var bailed = false;
		// list of modules that can skip create hook during hydration because they
		// are already rendered on the client or has no need for initialization
		var isRenderedModule = makeMap('attrs,style,class,staticClass,staticStyle,key');

		// Note: this is a browser-only function so we can assume elms are DOM nodes.
		function hydrate(elm, vnode, insertedVnodeQueue) {
			if (isTrue(vnode.isComment) && isDef(vnode.asyncFactory)) {
				vnode.elm = elm;
				vnode.isAsyncPlaceholder = true;
				return true
			} {
				if (!assertNodeMatch(elm, vnode)) {
					return false
				}
			}
			vnode.elm = elm;
			var tag = vnode.tag;
			var data = vnode.data;
			var children = vnode.children;
			if (isDef(data)) {
				if (isDef(i = data.hook) && isDef(i = i.init)) {
					i(vnode, true
					/* hydrating */
					);
				}
				if (isDef(i = vnode.componentInstance)) {
					// child component. it should have hydrated its own tree.
					initComponent(vnode, insertedVnodeQueue);
					return true
				}
			}
			if (isDef(tag)) {
				if (isDef(children)) {
					// empty element, allow client to pick up and populate children
					if (!elm.hasChildNodes()) {
						createChildren(vnode, children, insertedVnodeQueue);
					} else {
						// v-html and domProps: innerHTML
						if (isDef(i = data) && isDef(i = i.domProps) && isDef(i = i.innerHTML)) {
							if (i !== elm.innerHTML) {
								/* istanbul ignore if */
								if ("development" !== 'production' && typeof console !== 'undefined' && !bailed) {
									bailed = true;
									console.warn('Parent: ', elm);
									console.warn('server innerHTML: ', i);
									console.warn('client innerHTML: ', elm.innerHTML);
								}
								return false
							}
						} else {
							// iterate and compare children lists
							var childrenMatch = true;
							var childNode = elm.firstChild;
							for (var i$1 = 0; i$1 < children.length; i$1++) {
								if (!childNode || !hydrate(childNode, children[i$1], insertedVnodeQueue)) {
									childrenMatch = false;
									break
								}
								childNode = childNode.nextSibling;
							}
							// if childNode is not null, it means the actual childNodes list is
							// longer than the virtual children list.
							if (!childrenMatch || childNode) {
								/* istanbul ignore if */
								if ("development" !== 'production' && typeof console !== 'undefined' && !bailed) {
									bailed = true;
									console.warn('Parent: ', elm);
									console.warn('Mismatching childNodes vs. VNodes: ', elm.childNodes, children);
								}
								return false
							}
						}
					}
				}
				if (isDef(data)) {
					for (var key in data) {
						if (!isRenderedModule(key)) {
							invokeCreateHooks(vnode, insertedVnodeQueue);
							break
						}
					}
				}
			} else if (elm.data !== vnode.text) {
				elm.data = vnode.text;
			}
			return true
		}

		function assertNodeMatch(node, vnode) {
			if (isDef(vnode.tag)) {
				return (vnode.tag.indexOf('vue-component') === 0 || vnode.tag.toLowerCase() === (node.tagName && node.tagName.toLowerCase()))
			} else {
				return node.nodeType === (vnode.isComment ? 8 : 3)
			}
		}

		return function patch(oldVnode, vnode, hydrating, removeOnly, parentElm, refElm) {
			if (isUndef(vnode)) {
				if (isDef(oldVnode)) {
					invokeDestroyHook(oldVnode);
				}
				return
			}

			var isInitialPatch = false;
			var insertedVnodeQueue = [];

			if (isUndef(oldVnode)) {
				// empty mount (likely as component), create new root element
				isInitialPatch = true;
				createElm(vnode, insertedVnodeQueue, parentElm, refElm);
			} else {
				var isRealElement = isDef(oldVnode.nodeType);
				if (!isRealElement && sameVnode(oldVnode, vnode)) {
					// patch existing root node
					patchVnode(oldVnode, vnode, insertedVnodeQueue, removeOnly);
				} else {
					if (isRealElement) {
						// mounting to a real element
						// check if this is server-rendered content and if we can perform
						// a successful hydration.
						if (oldVnode.nodeType === 1 && oldVnode.hasAttribute(SSR_ATTR)) {
							oldVnode.removeAttribute(SSR_ATTR);
							hydrating = true;
						}
						if (isTrue(hydrating)) {
							if (hydrate(oldVnode, vnode, insertedVnodeQueue)) {
								invokeInsertHook(vnode, insertedVnodeQueue, true);
								return oldVnode
							} else {
								warn('The client-side rendered virtual DOM tree is not matching ' + 'server-rendered content. This is likely caused by incorrect ' + 'HTML markup, for example nesting block-level elements inside ' + '<p>, or missing <tbody>. Bailing hydration and performing ' + 'full client-side render.');
							}
						}
						// either not server-rendered, or hydration failed.
						// create an empty node and replace it
						oldVnode = emptyNodeAt(oldVnode);
					}
					// replacing existing element
					var oldElm = oldVnode.elm;
					var parentElm$1 = nodeOps.parentNode(oldElm);
					createElm(vnode, insertedVnodeQueue,
					// extremely rare edge case: do not insert if old element is in a
					// leaving transition. Only happens when combining transition +
					// keep-alive + HOCs. (#4590)
					oldElm._leaveCb ? null: parentElm$1, nodeOps.nextSibling(oldElm));

					if (isDef(vnode.parent)) {
						// component root element replaced.
						// update parent placeholder node element, recursively
						var ancestor = vnode.parent;
						var patchable = isPatchable(vnode);
						while (ancestor) {
							for (var i = 0; i < cbs.destroy.length; ++i) {
								cbs.destroy[i](ancestor);
							}
							ancestor.elm = vnode.elm;
							if (patchable) {
								for (var i$1 = 0; i$1 < cbs.create.length; ++i$1) {
									cbs.create[i$1](emptyNode, ancestor);
								}
								// #6513
								// invoke insert hooks that may have been merged by create hooks.
								// e.g. for directives that uses the "inserted" hook.
								var insert = ancestor.data.hook.insert;
								if (insert.merged) {
									// start at index 1 to avoid re-invoking component mounted hook
									for (var i$2 = 1; i$2 < insert.fns.length; i$2++) {
										insert.fns[i$2]();
									}
								}
							}
							ancestor = ancestor.parent;
						}
					}

					if (isDef(parentElm$1)) {
						removeVnodes(parentElm$1, [oldVnode], 0, 0);
					} else if (isDef(oldVnode.tag)) {
						invokeDestroyHook(oldVnode);
					}
				}
			}

			invokeInsertHook(vnode, insertedVnodeQueue, isInitialPatch);
			return vnode.elm
		}
	}

	/*  */

	var directives = {
		create: updateDirectives,
		update: updateDirectives,
		destroy: function unbindDirectives(vnode) {
			updateDirectives(vnode, emptyNode);
		}
	};

	function updateDirectives(oldVnode, vnode) {
		if (oldVnode.data.directives || vnode.data.directives) {
			_update(oldVnode, vnode);
		}
	}

	function _update(oldVnode, vnode) {
		var isCreate = oldVnode === emptyNode;
		var isDestroy = vnode === emptyNode;
		var oldDirs = normalizeDirectives$1(oldVnode.data.directives, oldVnode.context);
		var newDirs = normalizeDirectives$1(vnode.data.directives, vnode.context);

		var dirsWithInsert = [];
		var dirsWithPostpatch = [];

		var key, oldDir, dir;
		for (key in newDirs) {
			oldDir = oldDirs[key];
			dir = newDirs[key];
			if (!oldDir) {
				// new directive, bind
				callHook$1(dir, 'bind', vnode, oldVnode);
				if (dir.def && dir.def.inserted) {
					dirsWithInsert.push(dir);
				}
			} else {
				// existing directive, update
				dir.oldValue = oldDir.value;
				callHook$1(dir, 'update', vnode, oldVnode);
				if (dir.def && dir.def.componentUpdated) {
					dirsWithPostpatch.push(dir);
				}
			}
		}

		if (dirsWithInsert.length) {
			var callInsert = function() {
				for (var i = 0; i < dirsWithInsert.length; i++) {
					callHook$1(dirsWithInsert[i], 'inserted', vnode, oldVnode);
				}
			};
			if (isCreate) {
				mergeVNodeHook(vnode.data.hook || (vnode.data.hook = {}), 'insert', callInsert);
			} else {
				callInsert();
			}
		}

		if (dirsWithPostpatch.length) {
			mergeVNodeHook(vnode.data.hook || (vnode.data.hook = {}), 'postpatch',
			function() {
				for (var i = 0; i < dirsWithPostpatch.length; i++) {
					callHook$1(dirsWithPostpatch[i], 'componentUpdated', vnode, oldVnode);
				}
			});
		}

		if (!isCreate) {
			for (key in oldDirs) {
				if (!newDirs[key]) {
					// no longer present, unbind
					callHook$1(oldDirs[key], 'unbind', oldVnode, oldVnode, isDestroy);
				}
			}
		}
	}

	var emptyModifiers = Object.create(null);

	function normalizeDirectives$1(dirs, vm) {
		var res = Object.create(null);
		if (!dirs) {
			return res
		}
		var i, dir;
		for (i = 0; i < dirs.length; i++) {
			dir = dirs[i];
			if (!dir.modifiers) {
				dir.modifiers = emptyModifiers;
			}
			res[getRawDirName(dir)] = dir;
			dir.def = resolveAsset(vm.$options, 'directives', dir.name, true);
		}
		return res
	}

	function getRawDirName(dir) {
		return dir.rawName || ((dir.name) + "." + (Object.keys(dir.modifiers || {}).join('.')))
	}

	function callHook$1(dir, hook, vnode, oldVnode, isDestroy) {
		var fn = dir.def && dir.def[hook];
		if (fn) {
			try {
				fn(vnode.elm, dir, vnode, oldVnode, isDestroy);
			} catch(e) {
				handleError(e, vnode.context, ("directive " + (dir.name) + " " + hook + " hook"));
			}
		}
	}

	var baseModules = [ref, directives];

	/*  */

	function updateAttrs(oldVnode, vnode) {
		var opts = vnode.componentOptions;
		if (isDef(opts) && opts.Ctor.options.inheritAttrs === false) {
			return
		}
		if (isUndef(oldVnode.data.attrs) && isUndef(vnode.data.attrs)) {
			return
		}
		var key, cur, old;
		var elm = vnode.elm;
		var oldAttrs = oldVnode.data.attrs || {};
		var attrs = vnode.data.attrs || {};
		// clone observed objects, as the user probably wants to mutate it
		if (isDef(attrs.__ob__)) {
			attrs = vnode.data.attrs = extend({},
			attrs);
		}

		for (key in attrs) {
			cur = attrs[key];
			old = oldAttrs[key];
			if (old !== cur) {
				setAttr(elm, key, cur);
			}
		}
		// #4391: in IE9, setting type can reset value for input[type=radio]
		/* istanbul ignore if */
		if (isIE9 && attrs.value !== oldAttrs.value) {
			setAttr(elm, 'value', attrs.value);
		}
		for (key in oldAttrs) {
			if (isUndef(attrs[key])) {
				if (isXlink(key)) {
					elm.removeAttributeNS(xlinkNS, getXlinkProp(key));
				} else if (!isEnumeratedAttr(key)) {
					elm.removeAttribute(key);
				}
			}
		}
	}

	function setAttr(el, key, value) {
		if (isBooleanAttr(key)) {
			// set attribute for blank value
			// e.g. <option disabled>Select one</option>
			if (isFalsyAttrValue(value)) {
				el.removeAttribute(key);
			} else {
				// technically allowfullscreen is a boolean attribute for <iframe>,
				// but Flash expects a value of "true" when used on <embed> tag
				value = key === 'allowfullscreen' && el.tagName === 'EMBED' ? 'true': key;
				el.setAttribute(key, value);
			}
		} else if (isEnumeratedAttr(key)) {
			el.setAttribute(key, isFalsyAttrValue(value) || value === 'false' ? 'false': 'true');
		} else if (isXlink(key)) {
			if (isFalsyAttrValue(value)) {
				el.removeAttributeNS(xlinkNS, getXlinkProp(key));
			} else {
				el.setAttributeNS(xlinkNS, key, value);
			}
		} else {
			if (isFalsyAttrValue(value)) {
				el.removeAttribute(key);
			} else {
				el.setAttribute(key, value);
			}
		}
	}

	var attrs = {
		create: updateAttrs,
		update: updateAttrs
	};

	/*  */

	function updateClass(oldVnode, vnode) {
		var el = vnode.elm;
		var data = vnode.data;
		var oldData = oldVnode.data;
		if (isUndef(data.staticClass) && isUndef(data.class) && (isUndef(oldData) || (isUndef(oldData.staticClass) && isUndef(oldData.class)))) {
			return
		}

		var cls = genClassForVnode(vnode);

		// handle transition classes
		var transitionClass = el._transitionClasses;
		if (isDef(transitionClass)) {
			cls = concat(cls, stringifyClass(transitionClass));
		}

		// set the class
		if (cls !== el._prevClass) {
			el.setAttribute('class', cls);
			el._prevClass = cls;
		}
	}

	var klass = {
		create: updateClass,
		update: updateClass
	};

	/*  */

	var validDivisionCharRE = /[\w).+\-_$\]]/;

	function parseFilters(exp) {
		var inSingle = false;
		var inDouble = false;
		var inTemplateString = false;
		var inRegex = false;
		var curly = 0;
		var square = 0;
		var paren = 0;
		var lastFilterIndex = 0;
		var c, prev, i, expression, filters;

		for (i = 0; i < exp.length; i++) {
			prev = c;
			c = exp.charCodeAt(i);
			if (inSingle) {
				if (c === 0x27 && prev !== 0x5C) {
					inSingle = false;
				}
			} else if (inDouble) {
				if (c === 0x22 && prev !== 0x5C) {
					inDouble = false;
				}
			} else if (inTemplateString) {
				if (c === 0x60 && prev !== 0x5C) {
					inTemplateString = false;
				}
			} else if (inRegex) {
				if (c === 0x2f && prev !== 0x5C) {
					inRegex = false;
				}
			} else if (c === 0x7C && // pipe
			exp.charCodeAt(i + 1) !== 0x7C && exp.charCodeAt(i - 1) !== 0x7C && !curly && !square && !paren) {
				if (expression === undefined) {
					// first filter, end of expression
					lastFilterIndex = i + 1;
					expression = exp.slice(0, i).trim();
				} else {
					pushFilter();
				}
			} else {
				switch (c) {
				case 0x22:
					inDouble = true;
					break // "
				case 0x27:
					inSingle = true;
					break // '
				case 0x60:
					inTemplateString = true;
					break // `
				case 0x28:
					paren++;
					break // (
				case 0x29:
					paren--;
					break // )
				case 0x5B:
					square++;
					break // [
				case 0x5D:
					square--;
					break // ]
				case 0x7B:
					curly++;
					break // {
				case 0x7D:
					curly--;
					break // }
				}
				if (c === 0x2f) { // /
					var j = i - 1;
					var p = (void 0);
					// find first non-whitespace prev char
					for (; j >= 0; j--) {
						p = exp.charAt(j);
						if (p !== ' ') {
							break
						}
					}
					if (!p || !validDivisionCharRE.test(p)) {
						inRegex = true;
					}
				}
			}
		}

		if (expression === undefined) {
			expression = exp.slice(0, i).trim();
		} else if (lastFilterIndex !== 0) {
			pushFilter();
		}

		function pushFilter() { (filters || (filters = [])).push(exp.slice(lastFilterIndex, i).trim());
			lastFilterIndex = i + 1;
		}

		if (filters) {
			for (i = 0; i < filters.length; i++) {
				expression = wrapFilter(expression, filters[i]);
			}
		}

		return expression
	}

	function wrapFilter(exp, filter) {
		var i = filter.indexOf('(');
		if (i < 0) {
			// _f: resolveFilter
			return ("_f(\"" + filter + "\")(" + exp + ")")
		} else {
			var name = filter.slice(0, i);
			var args = filter.slice(i + 1);
			return ("_f(\"" + name + "\")(" + exp + "," + args)
		}
	}

	/*  */

	function baseWarn(msg) {
		console.error(("[Vue compiler]: " + msg));
	}

	function pluckModuleFunction(modules, key) {
		return modules ? modules.map(function(m) {
			return m[key];
		}).filter(function(_) {
			return _;
		}) : []
	}

	function addProp(el, name, value) { (el.props || (el.props = [])).push({
			name: name,
			value: value
		});
	}

	function addAttr(el, name, value) { (el.attrs || (el.attrs = [])).push({
			name: name,
			value: value
		});
	}

	function addDirective(el, name, rawName, value, arg, modifiers) { (el.directives || (el.directives = [])).push({
			name: name,
			rawName: rawName,
			value: value,
			arg: arg,
			modifiers: modifiers
		});
	}

	function addHandler(el, name, value, modifiers, important, warn) {
		// warn prevent and passive modifier
		/* istanbul ignore if */
		if ("development" !== 'production' && warn && modifiers && modifiers.prevent && modifiers.passive) {
			warn('passive and prevent can\'t be used together. ' + 'Passive handler can\'t prevent default event.');
		}
		// check capture modifier
		if (modifiers && modifiers.capture) {
			delete modifiers.capture;
			name = '!' + name; // mark the event as captured
		}
		if (modifiers && modifiers.once) {
			delete modifiers.once;
			name = '~' + name; // mark the event as once
		}
		/* istanbul ignore if */
		if (modifiers && modifiers.passive) {
			delete modifiers.passive;
			name = '&' + name; // mark the event as passive
		}
		var events;
		if (modifiers && modifiers.native) {
			delete modifiers.native;
			events = el.nativeEvents || (el.nativeEvents = {});
		} else {
			events = el.events || (el.events = {});
		}
		var newHandler = {
			value: value,
			modifiers: modifiers
		};
		var handlers = events[name];
		/* istanbul ignore if */
		if (Array.isArray(handlers)) {
			important ? handlers.unshift(newHandler) : handlers.push(newHandler);
		} else if (handlers) {
			events[name] = important ? [newHandler, handlers] : [handlers, newHandler];
		} else {
			events[name] = newHandler;
		}
	}

	function getBindingAttr(el, name, getStatic) {
		var dynamicValue = getAndRemoveAttr(el, ':' + name) || getAndRemoveAttr(el, 'v-bind:' + name);
		if (dynamicValue != null) {
			return parseFilters(dynamicValue)
		} else if (getStatic !== false) {
			var staticValue = getAndRemoveAttr(el, name);
			if (staticValue != null) {
				return JSON.stringify(staticValue)
			}
		}
	}

	function getAndRemoveAttr(el, name) {
		var val;
		if ((val = el.attrsMap[name]) != null) {
			var list = el.attrsList;
			for (var i = 0,
			l = list.length; i < l; i++) {
				if (list[i].name === name) {
					list.splice(i, 1);
					break
				}
			}
		}
		return val
	}

	/*  */

	/**
 * Cross-platform code generation for component v-model
 */
	function genComponentModel(el, value, modifiers) {
		var ref = modifiers || {};
		var number = ref.number;
		var trim = ref.trim;

		var baseValueExpression = '$$v';
		var valueExpression = baseValueExpression;
		if (trim) {
			valueExpression = "(typeof " + baseValueExpression + " === 'string'" + "? " + baseValueExpression + ".trim()" + ": " + baseValueExpression + ")";
		}
		if (number) {
			valueExpression = "_n(" + valueExpression + ")";
		}
		var assignment = genAssignmentCode(value, valueExpression);

		el.model = {
			value: ("(" + value + ")"),
			expression: ("\"" + value + "\""),
			callback: ("function (" + baseValueExpression + ") {" + assignment + "}")
		};
	}

	/**
 * Cross-platform codegen helper for generating v-model value assignment code.
 */
	function genAssignmentCode(value, assignment) {
		var modelRs = parseModel(value);
		if (modelRs.idx === null) {
			return (value + "=" + assignment)
		} else {
			return ("$set(" + (modelRs.exp) + ", " + (modelRs.idx) + ", " + assignment + ")")
		}
	}

	/**
 * parse directive model to do the array update transform. a[idx] = val => $$a.splice($$idx, 1, val)
 *
 * for loop possible cases:
 *
 * - test
 * - test[idx]
 * - test[test1[idx]]
 * - test["a"][idx]
 * - xxx.test[a[a].test1[idx]]
 * - test.xxx.a["asa"][test1[idx]]
 *
 */

	var len;
	var str;
	var chr;
	var index$1;
	var expressionPos;
	var expressionEndPos;

	function parseModel(val) {
		str = val;
		len = str.length;
		index$1 = expressionPos = expressionEndPos = 0;

		if (val.indexOf('[') < 0 || val.lastIndexOf(']') < len - 1) {
			return {
				exp: val,
				idx: null
			}
		}

		while (!eof()) {
			chr = next();
			/* istanbul ignore if */
			if (isStringStart(chr)) {
				parseString(chr);
			} else if (chr === 0x5B) {
				parseBracket(chr);
			}
		}

		return {
			exp: val.substring(0, expressionPos),
			idx: val.substring(expressionPos + 1, expressionEndPos)
		}
	}

	function next() {
		return str.charCodeAt(++index$1)
	}

	function eof() {
		return index$1 >= len
	}

	function isStringStart(chr) {
		return chr === 0x22 || chr === 0x27
	}

	function parseBracket(chr) {
		var inBracket = 1;
		expressionPos = index$1;
		while (!eof()) {
			chr = next();
			if (isStringStart(chr)) {
				parseString(chr);
				continue
			}
			if (chr === 0x5B) {
				inBracket++;
			}
			if (chr === 0x5D) {
				inBracket--;
			}
			if (inBracket === 0) {
				expressionEndPos = index$1;
				break
			}
		}
	}

	function parseString(chr) {
		var stringQuote = chr;
		while (!eof()) {
			chr = next();
			if (chr === stringQuote) {
				break
			}
		}
	}

	/*  */

	var warn$1;

	// in some cases, the event used has to be determined at runtime
	// so we used some reserved tokens during compile.
	var RANGE_TOKEN = '__r';
	var CHECKBOX_RADIO_TOKEN = '__c';

	function model(el, dir, _warn) {
		warn$1 = _warn;
		var value = dir.value;
		var modifiers = dir.modifiers;
		var tag = el.tag;
		var type = el.attrsMap.type;

		{
			var dynamicType = el.attrsMap['v-bind:type'] || el.attrsMap[':type'];
			if (tag === 'input' && dynamicType) {
				warn$1("<input :type=\"" + dynamicType + "\" v-model=\"" + value + "\">:\n" + "v-model does not support dynamic input types. Use v-if branches instead.");
			}
			// inputs with type="file" are read only and setting the input's
			// value will throw an error.
			if (tag === 'input' && type === 'file') {
				warn$1("<" + (el.tag) + " v-model=\"" + value + "\" type=\"file\">:\n" + "File inputs are read only. Use a v-on:change listener instead.");
			}
		}

		if (el.component) {
			genComponentModel(el, value, modifiers);
			// component v-model doesn't need extra runtime
			return false
		} else if (tag === 'select') {
			genSelect(el, value, modifiers);
		} else if (tag === 'input' && type === 'checkbox') {
			genCheckboxModel(el, value, modifiers);
		} else if (tag === 'input' && type === 'radio') {
			genRadioModel(el, value, modifiers);
		} else if (tag === 'input' || tag === 'textarea') {
			genDefaultModel(el, value, modifiers);
		} else if (!config.isReservedTag(tag)) {
			genComponentModel(el, value, modifiers);
			// component v-model doesn't need extra runtime
			return false
		} else {
			warn$1("<" + (el.tag) + " v-model=\"" + value + "\">: " + "v-model is not supported on this element type. " + 'If you are working with contenteditable, it\'s recommended to ' + 'wrap a library dedicated for that purpose inside a custom component.');
		}

		// ensure runtime directive metadata
		return true
	}

	function genCheckboxModel(el, value, modifiers) {
		var number = modifiers && modifiers.number;
		var valueBinding = getBindingAttr(el, 'value') || 'null';
		var trueValueBinding = getBindingAttr(el, 'true-value') || 'true';
		var falseValueBinding = getBindingAttr(el, 'false-value') || 'false';
		addProp(el, 'checked', "Array.isArray(" + value + ")" + "?_i(" + value + "," + valueBinding + ")>-1" + (trueValueBinding === 'true' ? (":(" + value + ")") : (":_q(" + value + "," + trueValueBinding + ")")));
		addHandler(el, CHECKBOX_RADIO_TOKEN, "var $$a=" + value + "," + '$$el=$event.target,' + "$$c=$$el.checked?(" + trueValueBinding + "):(" + falseValueBinding + ");" + 'if(Array.isArray($$a)){' + "var $$v=" + (number ? '_n(' + valueBinding + ')': valueBinding) + "," + '$$i=_i($$a,$$v);' + "if($$el.checked){$$i<0&&(" + value + "=$$a.concat([$$v]))}" + "else{$$i>-1&&(" + value + "=$$a.slice(0,$$i).concat($$a.slice($$i+1)))}" + "}else{" + (genAssignmentCode(value, '$$c')) + "}", null, true);
	}

	function genRadioModel(el, value, modifiers) {
		var number = modifiers && modifiers.number;
		var valueBinding = getBindingAttr(el, 'value') || 'null';
		valueBinding = number ? ("_n(" + valueBinding + ")") : valueBinding;
		addProp(el, 'checked', ("_q(" + value + "," + valueBinding + ")"));
		addHandler(el, CHECKBOX_RADIO_TOKEN, genAssignmentCode(value, valueBinding), null, true);
	}

	function genSelect(el, value, modifiers) {
		var number = modifiers && modifiers.number;
		var selectedVal = "Array.prototype.filter" + ".call($event.target.options,function(o){return o.selected})" + ".map(function(o){var val = \"_value\" in o ? o._value : o.value;" + "return " + (number ? '_n(val)': 'val') + "})";

		var assignment = '$event.target.multiple ? $$selectedVal : $$selectedVal[0]';
		var code = "var $$selectedVal = " + selectedVal + ";";
		code = code + " " + (genAssignmentCode(value, assignment));
		addHandler(el, 'change', code, null, true);
	}

	function genDefaultModel(el, value, modifiers) {
		var type = el.attrsMap.type;
		var ref = modifiers || {};
		var lazy = ref.lazy;
		var number = ref.number;
		var trim = ref.trim;
		var needCompositionGuard = !lazy && type !== 'range';
		var event = lazy ? 'change': type === 'range' ? RANGE_TOKEN: 'input';

		var valueExpression = '$event.target.value';
		if (trim) {
			valueExpression = "$event.target.value.trim()";
		}
		if (number) {
			valueExpression = "_n(" + valueExpression + ")";
		}

		var code = genAssignmentCode(value, valueExpression);
		if (needCompositionGuard) {
			code = "if($event.target.composing)return;" + code;
		}

		addProp(el, 'value', ("(" + value + ")"));
		addHandler(el, event, code, null, true);
		if (trim || number) {
			addHandler(el, 'blur', '$forceUpdate()');
		}
	}

	/*  */

	// normalize v-model event tokens that can only be determined at runtime.
	// it's important to place the event as the first in the array because
	// the whole point is ensuring the v-model callback gets called before
	// user-attached handlers.
	function normalizeEvents(on) {
		var event;
		/* istanbul ignore if */
		if (isDef(on[RANGE_TOKEN])) {
			// IE input[type=range] only supports `change` event
			event = isIE ? 'change': 'input';
			on[event] = [].concat(on[RANGE_TOKEN], on[event] || []);
			delete on[RANGE_TOKEN];
		}
		if (isDef(on[CHECKBOX_RADIO_TOKEN])) {
			// Chrome fires microtasks in between click/change, leads to #4521
			event = isChrome ? 'click': 'change';
			on[event] = [].concat(on[CHECKBOX_RADIO_TOKEN], on[event] || []);
			delete on[CHECKBOX_RADIO_TOKEN];
		}
	}

	var target$1;

	function add$1(event, handler, once$$1, capture, passive) {
		if (once$$1) {
			var oldHandler = handler;
			var _target = target$1; // save current target element in closure
			handler = function(ev) {
				var res = arguments.length === 1 ? oldHandler(ev) : oldHandler.apply(null, arguments);
				if (res !== null) {
					remove$2(event, handler, capture, _target);
				}
			};
		}
		target$1.addEventListener(event, handler, supportsPassive ? {
			capture: capture,
			passive: passive
		}: capture);
	}

	function remove$2(event, handler, capture, _target) { (_target || target$1).removeEventListener(event, handler, capture);
	}

	function updateDOMListeners(oldVnode, vnode) {
		if (isUndef(oldVnode.data.on) && isUndef(vnode.data.on)) {
			return
		}
		var on = vnode.data.on || {};
		var oldOn = oldVnode.data.on || {};
		target$1 = vnode.elm;
		normalizeEvents(on);
		updateListeners(on, oldOn, add$1, remove$2, vnode.context);
	}

	var events = {
		create: updateDOMListeners,
		update: updateDOMListeners
	};

	/*  */

	function updateDOMProps(oldVnode, vnode) {
		if (isUndef(oldVnode.data.domProps) && isUndef(vnode.data.domProps)) {
			return
		}
		var key, cur;
		var elm = vnode.elm;
		var oldProps = oldVnode.data.domProps || {};
		var props = vnode.data.domProps || {};
		// clone observed objects, as the user probably wants to mutate it
		if (isDef(props.__ob__)) {
			props = vnode.data.domProps = extend({},
			props);
		}

		for (key in oldProps) {
			if (isUndef(props[key])) {
				elm[key] = '';
			}
		}
		for (key in props) {
			cur = props[key];
			// ignore children if the node has textContent or innerHTML,
			// as these will throw away existing DOM nodes and cause removal errors
			// on subsequent patches (#3360)
			if (key === 'textContent' || key === 'innerHTML') {
				if (vnode.children) {
					vnode.children.length = 0;
				}
				if (cur === oldProps[key]) {
					continue
				}
			}

			if (key === 'value') {
				// store value as _value as well since
				// non-string values will be stringified
				elm._value = cur;
				// avoid resetting cursor position when value is the same
				var strCur = isUndef(cur) ? '': String(cur);
				if (shouldUpdateValue(elm, vnode, strCur)) {
					elm.value = strCur;
				}
			} else {
				elm[key] = cur;
			}
		}
	}

	// check platforms/web/util/attrs.js acceptValue

	function shouldUpdateValue(elm, vnode, checkVal) {
		return (!elm.composing && (vnode.tag === 'option' || isDirty(elm, checkVal) || isInputChanged(elm, checkVal)))
	}

	function isDirty(elm, checkVal) {
		// return true when textbox (.number and .trim) loses focus and its value is
		// not equal to the updated value
		var notInFocus = true;
		// #6157
		// work around IE bug when accessing document.activeElement in an iframe
		try {
			notInFocus = document.activeElement !== elm;
		} catch(e) {}
		return notInFocus && elm.value !== checkVal
	}

	function isInputChanged(elm, newVal) {
		var value = elm.value;
		var modifiers = elm._vModifiers; // injected by v-model runtime
		if (isDef(modifiers) && modifiers.number) {
			return toNumber(value) !== toNumber(newVal)
		}
		if (isDef(modifiers) && modifiers.trim) {
			return value.trim() !== newVal.trim()
		}
		return value !== newVal
	}

	var domProps = {
		create: updateDOMProps,
		update: updateDOMProps
	};

	/*  */

	var parseStyleText = cached(function(cssText) {
		var res = {};
		var listDelimiter = /;(?![^(]*\))/g;
		var propertyDelimiter = /:(.+)/;
		cssText.split(listDelimiter).forEach(function(item) {
			if (item) {
				var tmp = item.split(propertyDelimiter);
				tmp.length > 1 && (res[tmp[0].trim()] = tmp[1].trim());
			}
		});
		return res
	});

	// merge static and dynamic style data on the same vnode
	function normalizeStyleData(data) {
		var style = normalizeStyleBinding(data.style);
		// static style is pre-processed into an object during compilation
		// and is always a fresh object, so it's safe to merge into it
		return data.staticStyle ? extend(data.staticStyle, style) : style
	}

	// normalize possible array / string values into Object
	function normalizeStyleBinding(bindingStyle) {
		if (Array.isArray(bindingStyle)) {
			return toObject(bindingStyle)
		}
		if (typeof bindingStyle === 'string') {
			return parseStyleText(bindingStyle)
		}
		return bindingStyle
	}

	/**
 * parent component style should be after child's
 * so that parent component's style could override it
 */
	function getStyle(vnode, checkChild) {
		var res = {};
		var styleData;

		if (checkChild) {
			var childNode = vnode;
			while (childNode.componentInstance) {
				childNode = childNode.componentInstance._vnode;
				if (childNode.data && (styleData = normalizeStyleData(childNode.data))) {
					extend(res, styleData);
				}
			}
		}

		if ((styleData = normalizeStyleData(vnode.data))) {
			extend(res, styleData);
		}

		var parentNode = vnode;
		while ((parentNode = parentNode.parent)) {
			if (parentNode.data && (styleData = normalizeStyleData(parentNode.data))) {
				extend(res, styleData);
			}
		}
		return res
	}

	/*  */

	var cssVarRE = /^--/;
	var importantRE = /\s*!important$/;
	var setProp = function(el, name, val) {
		/* istanbul ignore if */
		if (cssVarRE.test(name)) {
			el.style.setProperty(name, val);
		} else if (importantRE.test(val)) {
			el.style.setProperty(name, val.replace(importantRE, ''), 'important');
		} else {
			var normalizedName = normalize(name);
			if (Array.isArray(val)) {
				// Support values array created by autoprefixer, e.g.
				// {display: ["-webkit-box", "-ms-flexbox", "flex"]}
				// Set them one by one, and the browser will only set those it can recognize
				for (var i = 0,
				len = val.length; i < len; i++) {
					el.style[normalizedName] = val[i];
				}
			} else {
				el.style[normalizedName] = val;
			}
		}
	};

	var vendorNames = ['Webkit', 'Moz', 'ms'];

	var emptyStyle;
	var normalize = cached(function(prop) {
		emptyStyle = emptyStyle || document.createElement('div').style;
		prop = camelize(prop);
		if (prop !== 'filter' && (prop in emptyStyle)) {
			return prop
		}
		var capName = prop.charAt(0).toUpperCase() + prop.slice(1);
		for (var i = 0; i < vendorNames.length; i++) {
			var name = vendorNames[i] + capName;
			if (name in emptyStyle) {
				return name
			}
		}
	});

	function updateStyle(oldVnode, vnode) {
		var data = vnode.data;
		var oldData = oldVnode.data;

		if (isUndef(data.staticStyle) && isUndef(data.style) && isUndef(oldData.staticStyle) && isUndef(oldData.style)) {
			return
		}

		var cur, name;
		var el = vnode.elm;
		var oldStaticStyle = oldData.staticStyle;
		var oldStyleBinding = oldData.normalizedStyle || oldData.style || {};

		// if static style exists, stylebinding already merged into it when doing normalizeStyleData
		var oldStyle = oldStaticStyle || oldStyleBinding;

		var style = normalizeStyleBinding(vnode.data.style) || {};

		// store normalized style under a different key for next diff
		// make sure to clone it if it's reactive, since the user likely wants
		// to mutate it.
		vnode.data.normalizedStyle = isDef(style.__ob__) ? extend({},
		style) : style;

		var newStyle = getStyle(vnode, true);

		for (name in oldStyle) {
			if (isUndef(newStyle[name])) {
				setProp(el, name, '');
			}
		}
		for (name in newStyle) {
			cur = newStyle[name];
			if (cur !== oldStyle[name]) {
				// ie9 setting to null has no effect, must use empty string
				setProp(el, name, cur == null ? '': cur);
			}
		}
	}

	var style = {
		create: updateStyle,
		update: updateStyle
	};

	/*  */

	/**
 * Add class with compatibility for SVG since classList is not supported on
 * SVG elements in IE
 */
	function addClass(el, cls) {
		/* istanbul ignore if */
		if (!cls || !(cls = cls.trim())) {
			return
		}

		/* istanbul ignore else */
		if (el.classList) {
			if (cls.indexOf(' ') > -1) {
				cls.split(/\s+/).forEach(function(c) {
					return el.classList.add(c);
				});
			} else {
				el.classList.add(cls);
			}
		} else {
			var cur = " " + (el.getAttribute('class') || '') + " ";
			if (cur.indexOf(' ' + cls + ' ') < 0) {
				el.setAttribute('class', (cur + cls).trim());
			}
		}
	}

	/**
 * Remove class with compatibility for SVG since classList is not supported on
 * SVG elements in IE
 */
	function removeClass(el, cls) {
		/* istanbul ignore if */
		if (!cls || !(cls = cls.trim())) {
			return
		}

		/* istanbul ignore else */
		if (el.classList) {
			if (cls.indexOf(' ') > -1) {
				cls.split(/\s+/).forEach(function(c) {
					return el.classList.remove(c);
				});
			} else {
				el.classList.remove(cls);
			}
			if (!el.classList.length) {
				el.removeAttribute('class');
			}
		} else {
			var cur = " " + (el.getAttribute('class') || '') + " ";
			var tar = ' ' + cls + ' ';
			while (cur.indexOf(tar) >= 0) {
				cur = cur.replace(tar, ' ');
			}
			cur = cur.trim();
			if (cur) {
				el.setAttribute('class', cur);
			} else {
				el.removeAttribute('class');
			}
		}
	}

	/*  */

	function resolveTransition(def$$1) {
		if (!def$$1) {
			return
		}
		/* istanbul ignore else */
		if (typeof def$$1 === 'object') {
			var res = {};
			if (def$$1.css !== false) {
				extend(res, autoCssTransition(def$$1.name || 'v'));
			}
			extend(res, def$$1);
			return res
		} else if (typeof def$$1 === 'string') {
			return autoCssTransition(def$$1)
		}
	}

	var autoCssTransition = cached(function(name) {
		return {
			enterClass: (name + "-enter"),
			enterToClass: (name + "-enter-to"),
			enterActiveClass: (name + "-enter-active"),
			leaveClass: (name + "-leave"),
			leaveToClass: (name + "-leave-to"),
			leaveActiveClass: (name + "-leave-active")
		}
	});

	var hasTransition = inBrowser && !isIE9;
	var TRANSITION = 'transition';
	var ANIMATION = 'animation';

	// Transition property/event sniffing
	var transitionProp = 'transition';
	var transitionEndEvent = 'transitionend';
	var animationProp = 'animation';
	var animationEndEvent = 'animationend';
	if (hasTransition) {
		/* istanbul ignore if */
		if (window.ontransitionend === undefined && window.onwebkittransitionend !== undefined) {
			transitionProp = 'WebkitTransition';
			transitionEndEvent = 'webkitTransitionEnd';
		}
		if (window.onanimationend === undefined && window.onwebkitanimationend !== undefined) {
			animationProp = 'WebkitAnimation';
			animationEndEvent = 'webkitAnimationEnd';
		}
	}

	// binding to window is necessary to make hot reload work in IE in strict mode
	var raf = inBrowser && window.requestAnimationFrame ? window.requestAnimationFrame.bind(window) : setTimeout;

	function nextFrame(fn) {
		raf(function() {
			raf(fn);
		});
	}

	function addTransitionClass(el, cls) {
		var transitionClasses = el._transitionClasses || (el._transitionClasses = []);
		if (transitionClasses.indexOf(cls) < 0) {
			transitionClasses.push(cls);
			addClass(el, cls);
		}
	}

	function removeTransitionClass(el, cls) {
		if (el._transitionClasses) {
			remove(el._transitionClasses, cls);
		}
		removeClass(el, cls);
	}

	function whenTransitionEnds(el, expectedType, cb) {
		var ref = getTransitionInfo(el, expectedType);
		var type = ref.type;
		var timeout = ref.timeout;
		var propCount = ref.propCount;
		if (!type) {
			return cb()
		}
		var event = type === TRANSITION ? transitionEndEvent: animationEndEvent;
		var ended = 0;
		var end = function() {
			el.removeEventListener(event, onEnd);
			cb();
		};
		var onEnd = function(e) {
			if (e.target === el) {
				if (++ended >= propCount) {
					end();
				}
			}
		};
		setTimeout(function() {
			if (ended < propCount) {
				end();
			}
		},
		timeout + 1);
		el.addEventListener(event, onEnd);
	}

	var transformRE = /\b(transform|all)(,|$)/;

	function getTransitionInfo(el, expectedType) {
		var styles = window.getComputedStyle(el);
		var transitionDelays = styles[transitionProp + 'Delay'].split(', ');
		var transitionDurations = styles[transitionProp + 'Duration'].split(', ');
		var transitionTimeout = getTimeout(transitionDelays, transitionDurations);
		var animationDelays = styles[animationProp + 'Delay'].split(', ');
		var animationDurations = styles[animationProp + 'Duration'].split(', ');
		var animationTimeout = getTimeout(animationDelays, animationDurations);

		var type;
		var timeout = 0;
		var propCount = 0;
		/* istanbul ignore if */
		if (expectedType === TRANSITION) {
			if (transitionTimeout > 0) {
				type = TRANSITION;
				timeout = transitionTimeout;
				propCount = transitionDurations.length;
			}
		} else if (expectedType === ANIMATION) {
			if (animationTimeout > 0) {
				type = ANIMATION;
				timeout = animationTimeout;
				propCount = animationDurations.length;
			}
		} else {
			timeout = Math.max(transitionTimeout, animationTimeout);
			type = timeout > 0 ? transitionTimeout > animationTimeout ? TRANSITION: ANIMATION: null;
			propCount = type ? type === TRANSITION ? transitionDurations.length: animationDurations.length: 0;
		}
		var hasTransform = type === TRANSITION && transformRE.test(styles[transitionProp + 'Property']);
		return {
			type: type,
			timeout: timeout,
			propCount: propCount,
			hasTransform: hasTransform
		}
	}

	function getTimeout(delays, durations) {
		/* istanbul ignore next */
		while (delays.length < durations.length) {
			delays = delays.concat(delays);
		}

		return Math.max.apply(null, durations.map(function(d, i) {
			return toMs(d) + toMs(delays[i])
		}))
	}

	function toMs(s) {
		return Number(s.slice(0, -1)) * 1000
	}

	/*  */

	function enter(vnode, toggleDisplay) {
		var el = vnode.elm;

		// call leave callback now
		if (isDef(el._leaveCb)) {
			el._leaveCb.cancelled = true;
			el._leaveCb();
		}

		var data = resolveTransition(vnode.data.transition);
		if (isUndef(data)) {
			return
		}

		/* istanbul ignore if */
		if (isDef(el._enterCb) || el.nodeType !== 1) {
			return
		}

		var css = data.css;
		var type = data.type;
		var enterClass = data.enterClass;
		var enterToClass = data.enterToClass;
		var enterActiveClass = data.enterActiveClass;
		var appearClass = data.appearClass;
		var appearToClass = data.appearToClass;
		var appearActiveClass = data.appearActiveClass;
		var beforeEnter = data.beforeEnter;
		var enter = data.enter;
		var afterEnter = data.afterEnter;
		var enterCancelled = data.enterCancelled;
		var beforeAppear = data.beforeAppear;
		var appear = data.appear;
		var afterAppear = data.afterAppear;
		var appearCancelled = data.appearCancelled;
		var duration = data.duration;

		// activeInstance will always be the <transition> component managing this
		// transition. One edge case to check is when the <transition> is placed
		// as the root node of a child component. In that case we need to check
		// <transition>'s parent for appear check.
		var context = activeInstance;
		var transitionNode = activeInstance.$vnode;
		while (transitionNode && transitionNode.parent) {
			transitionNode = transitionNode.parent;
			context = transitionNode.context;
		}

		var isAppear = !context._isMounted || !vnode.isRootInsert;

		if (isAppear && !appear && appear !== '') {
			return
		}

		var startClass = isAppear && appearClass ? appearClass: enterClass;
		var activeClass = isAppear && appearActiveClass ? appearActiveClass: enterActiveClass;
		var toClass = isAppear && appearToClass ? appearToClass: enterToClass;

		var beforeEnterHook = isAppear ? (beforeAppear || beforeEnter) : beforeEnter;
		var enterHook = isAppear ? (typeof appear === 'function' ? appear: enter) : enter;
		var afterEnterHook = isAppear ? (afterAppear || afterEnter) : afterEnter;
		var enterCancelledHook = isAppear ? (appearCancelled || enterCancelled) : enterCancelled;

		var explicitEnterDuration = toNumber(isObject(duration) ? duration.enter: duration);

		if ("development" !== 'production' && explicitEnterDuration != null) {
			checkDuration(explicitEnterDuration, 'enter', vnode);
		}

		var expectsCSS = css !== false && !isIE9;
		var userWantsControl = getHookArgumentsLength(enterHook);

		var cb = el._enterCb = once(function() {
			if (expectsCSS) {
				removeTransitionClass(el, toClass);
				removeTransitionClass(el, activeClass);
			}
			if (cb.cancelled) {
				if (expectsCSS) {
					removeTransitionClass(el, startClass);
				}
				enterCancelledHook && enterCancelledHook(el);
			} else {
				afterEnterHook && afterEnterHook(el);
			}
			el._enterCb = null;
		});

		if (!vnode.data.show) {
			// remove pending leave element on enter by injecting an insert hook
			mergeVNodeHook(vnode.data.hook || (vnode.data.hook = {}), 'insert',
			function() {
				var parent = el.parentNode;
				var pendingNode = parent && parent._pending && parent._pending[vnode.key];
				if (pendingNode && pendingNode.tag === vnode.tag && pendingNode.elm._leaveCb) {
					pendingNode.elm._leaveCb();
				}
				enterHook && enterHook(el, cb);
			});
		}

		// start enter transition
		beforeEnterHook && beforeEnterHook(el);
		if (expectsCSS) {
			addTransitionClass(el, startClass);
			addTransitionClass(el, activeClass);
			nextFrame(function() {
				addTransitionClass(el, toClass);
				removeTransitionClass(el, startClass);
				if (!cb.cancelled && !userWantsControl) {
					if (isValidDuration(explicitEnterDuration)) {
						setTimeout(cb, explicitEnterDuration);
					} else {
						whenTransitionEnds(el, type, cb);
					}
				}
			});
		}

		if (vnode.data.show) {
			toggleDisplay && toggleDisplay();
			enterHook && enterHook(el, cb);
		}

		if (!expectsCSS && !userWantsControl) {
			cb();
		}
	}

	function leave(vnode, rm) {
		var el = vnode.elm;

		// call enter callback now
		if (isDef(el._enterCb)) {
			el._enterCb.cancelled = true;
			el._enterCb();
		}

		var data = resolveTransition(vnode.data.transition);
		if (isUndef(data)) {
			return rm()
		}

		/* istanbul ignore if */
		if (isDef(el._leaveCb) || el.nodeType !== 1) {
			return
		}

		var css = data.css;
		var type = data.type;
		var leaveClass = data.leaveClass;
		var leaveToClass = data.leaveToClass;
		var leaveActiveClass = data.leaveActiveClass;
		var beforeLeave = data.beforeLeave;
		var leave = data.leave;
		var afterLeave = data.afterLeave;
		var leaveCancelled = data.leaveCancelled;
		var delayLeave = data.delayLeave;
		var duration = data.duration;

		var expectsCSS = css !== false && !isIE9;
		var userWantsControl = getHookArgumentsLength(leave);

		var explicitLeaveDuration = toNumber(isObject(duration) ? duration.leave: duration);

		if ("development" !== 'production' && isDef(explicitLeaveDuration)) {
			checkDuration(explicitLeaveDuration, 'leave', vnode);
		}

		var cb = el._leaveCb = once(function() {
			if (el.parentNode && el.parentNode._pending) {
				el.parentNode._pending[vnode.key] = null;
			}
			if (expectsCSS) {
				removeTransitionClass(el, leaveToClass);
				removeTransitionClass(el, leaveActiveClass);
			}
			if (cb.cancelled) {
				if (expectsCSS) {
					removeTransitionClass(el, leaveClass);
				}
				leaveCancelled && leaveCancelled(el);
			} else {
				rm();
				afterLeave && afterLeave(el);
			}
			el._leaveCb = null;
		});

		if (delayLeave) {
			delayLeave(performLeave);
		} else {
			performLeave();
		}

		function performLeave() {
			// the delayed leave may have already been cancelled
			if (cb.cancelled) {
				return
			}
			// record leaving element
			if (!vnode.data.show) { (el.parentNode._pending || (el.parentNode._pending = {}))[(vnode.key)] = vnode;
			}
			beforeLeave && beforeLeave(el);
			if (expectsCSS) {
				addTransitionClass(el, leaveClass);
				addTransitionClass(el, leaveActiveClass);
				nextFrame(function() {
					addTransitionClass(el, leaveToClass);
					removeTransitionClass(el, leaveClass);
					if (!cb.cancelled && !userWantsControl) {
						if (isValidDuration(explicitLeaveDuration)) {
							setTimeout(cb, explicitLeaveDuration);
						} else {
							whenTransitionEnds(el, type, cb);
						}
					}
				});
			}
			leave && leave(el, cb);
			if (!expectsCSS && !userWantsControl) {
				cb();
			}
		}
	}

	// only used in dev mode
	function checkDuration(val, name, vnode) {
		if (typeof val !== 'number') {
			warn("<transition> explicit " + name + " duration is not a valid number - " + "got " + (JSON.stringify(val)) + ".", vnode.context);
		} else if (isNaN(val)) {
			warn("<transition> explicit " + name + " duration is NaN - " + 'the duration expression might be incorrect.', vnode.context);
		}
	}

	function isValidDuration(val) {
		return typeof val === 'number' && !isNaN(val)
	}

	/**
 * Normalize a transition hook's argument length. The hook may be:
 * - a merged hook (invoker) with the original in .fns
 * - a wrapped component method (check ._length)
 * - a plain function (.length)
 */
	function getHookArgumentsLength(fn) {
		if (isUndef(fn)) {
			return false
		}
		var invokerFns = fn.fns;
		if (isDef(invokerFns)) {
			// invoker
			return getHookArgumentsLength(Array.isArray(invokerFns) ? invokerFns[0] : invokerFns)
		} else {
			return (fn._length || fn.length) > 1
		}
	}

	function _enter(_, vnode) {
		if (vnode.data.show !== true) {
			enter(vnode);
		}
	}

	var transition = inBrowser ? {
		create: _enter,
		activate: _enter,
		remove: function remove$$1(vnode, rm) {
			/* istanbul ignore else */
			if (vnode.data.show !== true) {
				leave(vnode, rm);
			} else {
				rm();
			}
		}
	}: {};

	var platformModules = [attrs, klass, events, domProps, style, transition];

	/*  */

	// the directive module should be applied last, after all
	// built-in modules have been applied.
	var modules = platformModules.concat(baseModules);

	var patch = createPatchFunction({
		nodeOps: nodeOps,
		modules: modules
	});

	/**
 * Not type checking this file because flow doesn't like attaching
 * properties to Elements.
 */

	/* istanbul ignore if */
	if (isIE9) {
		// http://www.matts411.com/post/internet-explorer-9-oninput/
		document.addEventListener('selectionchange',
		function() {
			var el = document.activeElement;
			if (el && el.vmodel) {
				trigger(el, 'input');
			}
		});
	}

	var model$1 = {
		inserted: function inserted(el, binding, vnode) {
			if (vnode.tag === 'select') {
				setSelected(el, binding, vnode.context);
				el._vOptions = [].map.call(el.options, getValue);
			} else if (vnode.tag === 'textarea' || isTextInputType(el.type)) {
				el._vModifiers = binding.modifiers;
				if (!binding.modifiers.lazy) {
					// Safari < 10.2 & UIWebView doesn't fire compositionend when
					// switching focus before confirming composition choice
					// this also fixes the issue where some browsers e.g. iOS Chrome
					// fires "change" instead of "input" on autocomplete.
					el.addEventListener('change', onCompositionEnd);
					if (!isAndroid) {
						el.addEventListener('compositionstart', onCompositionStart);
						el.addEventListener('compositionend', onCompositionEnd);
					}
					/* istanbul ignore if */
					if (isIE9) {
						el.vmodel = true;
					}
				}
			}
		},
		componentUpdated: function componentUpdated(el, binding, vnode) {
			if (vnode.tag === 'select') {
				setSelected(el, binding, vnode.context);
				// in case the options rendered by v-for have changed,
				// it's possible that the value is out-of-sync with the rendered options.
				// detect such cases and filter out values that no longer has a matching
				// option in the DOM.
				var prevOptions = el._vOptions;
				var curOptions = el._vOptions = [].map.call(el.options, getValue);
				if (curOptions.some(function(o, i) {
					return ! looseEqual(o, prevOptions[i]);
				})) {
					// trigger change event if
					// no matching option found for at least one value
					var needReset = el.multiple ? binding.value.some(function(v) {
						return hasNoMatchingOption(v, curOptions);
					}) : binding.value !== binding.oldValue && hasNoMatchingOption(binding.value, curOptions);
					if (needReset) {
						trigger(el, 'change');
					}
				}
			}
		}
	};

	function setSelected(el, binding, vm) {
		actuallySetSelected(el, binding, vm);
		/* istanbul ignore if */
		if (isIE || isEdge) {
			setTimeout(function() {
				actuallySetSelected(el, binding, vm);
			},
			0);
		}
	}

	function actuallySetSelected(el, binding, vm) {
		var value = binding.value;
		var isMultiple = el.multiple;
		if (isMultiple && !Array.isArray(value)) {
			"development" !== 'production' && warn("<select multiple v-model=\"" + (binding.expression) + "\"> " + "expects an Array value for its binding, but got " + (Object.prototype.toString.call(value).slice(8, -1)), vm);
			return
		}
		var selected, option;
		for (var i = 0,
		l = el.options.length; i < l; i++) {
			option = el.options[i];
			if (isMultiple) {
				selected = looseIndexOf(value, getValue(option)) > -1;
				if (option.selected !== selected) {
					option.selected = selected;
				}
			} else {
				if (looseEqual(getValue(option), value)) {
					if (el.selectedIndex !== i) {
						el.selectedIndex = i;
					}
					return
				}
			}
		}
		if (!isMultiple) {
			el.selectedIndex = -1;
		}
	}

	function hasNoMatchingOption(value, options) {
		return options.every(function(o) {
			return ! looseEqual(o, value);
		})
	}

	function getValue(option) {
		return '_value' in option ? option._value: option.value
	}

	function onCompositionStart(e) {
		e.target.composing = true;
	}

	function onCompositionEnd(e) {
		// prevent triggering an input event for no reason
		if (!e.target.composing) {
			return
		}
		e.target.composing = false;
		trigger(e.target, 'input');
	}

	function trigger(el, type) {
		var e = document.createEvent('HTMLEvents');
		e.initEvent(type, true, true);
		el.dispatchEvent(e);
	}

	/*  */

	// recursively search for possible transition defined inside the component root
	function locateNode(vnode) {
		return vnode.componentInstance && (!vnode.data || !vnode.data.transition) ? locateNode(vnode.componentInstance._vnode) : vnode
	}

	var show = {
		bind: function bind(el, ref, vnode) {
			var value = ref.value;

			vnode = locateNode(vnode);
			var transition$$1 = vnode.data && vnode.data.transition;
			var originalDisplay = el.__vOriginalDisplay = el.style.display === 'none' ? '': el.style.display;
			if (value && transition$$1) {
				vnode.data.show = true;
				enter(vnode,
				function() {
					el.style.display = originalDisplay;
				});
			} else {
				el.style.display = value ? originalDisplay: 'none';
			}
		},

		update: function update(el, ref, vnode) {
			var value = ref.value;
			var oldValue = ref.oldValue;

			/* istanbul ignore if */
			if (value === oldValue) {
				return
			}
			vnode = locateNode(vnode);
			var transition$$1 = vnode.data && vnode.data.transition;
			if (transition$$1) {
				vnode.data.show = true;
				if (value) {
					enter(vnode,
					function() {
						el.style.display = el.__vOriginalDisplay;
					});
				} else {
					leave(vnode,
					function() {
						el.style.display = 'none';
					});
				}
			} else {
				el.style.display = value ? el.__vOriginalDisplay: 'none';
			}
		},

		unbind: function unbind(el, binding, vnode, oldVnode, isDestroy) {
			if (!isDestroy) {
				el.style.display = el.__vOriginalDisplay;
			}
		}
	};

	var platformDirectives = {
		model: model$1,
		show: show
	};

	/*  */

	// Provides transition support for a single element/component.
	// supports transition mode (out-in / in-out)
	var transitionProps = {
		name: String,
		appear: Boolean,
		css: Boolean,
		mode: String,
		type: String,
		enterClass: String,
		leaveClass: String,
		enterToClass: String,
		leaveToClass: String,
		enterActiveClass: String,
		leaveActiveClass: String,
		appearClass: String,
		appearActiveClass: String,
		appearToClass: String,
		duration: [Number, String, Object]
	};

	// in case the child is also an abstract component, e.g. <keep-alive>
	// we want to recursively retrieve the real component to be rendered
	function getRealChild(vnode) {
		var compOptions = vnode && vnode.componentOptions;
		if (compOptions && compOptions.Ctor.options.abstract) {
			return getRealChild(getFirstComponentChild(compOptions.children))
		} else {
			return vnode
		}
	}

	function extractTransitionData(comp) {
		var data = {};
		var options = comp.$options;
		// props
		for (var key in options.propsData) {
			data[key] = comp[key];
		}
		// events.
		// extract listeners and pass them directly to the transition methods
		var listeners = options._parentListeners;
		for (var key$1 in listeners) {
			data[camelize(key$1)] = listeners[key$1];
		}
		return data
	}

	function placeholder(h, rawChild) {
		if (/\d-keep-alive$/.test(rawChild.tag)) {
			return h('keep-alive', {
				props: rawChild.componentOptions.propsData
			})
		}
	}

	function hasParentTransition(vnode) {
		while ((vnode = vnode.parent)) {
			if (vnode.data.transition) {
				return true
			}
		}
	}

	function isSameChild(child, oldChild) {
		return oldChild.key === child.key && oldChild.tag === child.tag
	}

	var Transition = {
		name: 'transition',
		props: transitionProps,
		abstract: true,

		render: function render(h) {
			var this$1 = this;

			var children = this.$options._renderChildren;
			if (!children) {
				return
			}

			// filter out text nodes (possible whitespaces)
			children = children.filter(function(c) {
				return c.tag || isAsyncPlaceholder(c);
			});
			/* istanbul ignore if */
			if (!children.length) {
				return
			}

			// warn multiple elements
			if ("development" !== 'production' && children.length > 1) {
				warn('<transition> can only be used on a single element. Use ' + '<transition-group> for lists.', this.$parent);
			}

			var mode = this.mode;

			// warn invalid mode
			if ("development" !== 'production' && mode && mode !== 'in-out' && mode !== 'out-in') {
				warn('invalid <transition> mode: ' + mode, this.$parent);
			}

			var rawChild = children[0];

			// if this is a component root node and the component's
			// parent container node also has transition, skip.
			if (hasParentTransition(this.$vnode)) {
				return rawChild
			}

			// apply transition data to child
			// use getRealChild() to ignore abstract components e.g. keep-alive
			var child = getRealChild(rawChild);
			/* istanbul ignore if */
			if (!child) {
				return rawChild
			}

			if (this._leaving) {
				return placeholder(h, rawChild)
			}

			// ensure a key that is unique to the vnode type and to this transition
			// component instance. This key will be used to remove pending leaving nodes
			// during entering.
			var id = "__transition-" + (this._uid) + "-";
			child.key = child.key == null ? child.isComment ? id + 'comment': id + child.tag: isPrimitive(child.key) ? (String(child.key).indexOf(id) === 0 ? child.key: id + child.key) : child.key;

			var data = (child.data || (child.data = {})).transition = extractTransitionData(this);
			var oldRawChild = this._vnode;
			var oldChild = getRealChild(oldRawChild);

			// mark v-show
			// so that the transition module can hand over the control to the directive
			if (child.data.directives && child.data.directives.some(function(d) {
				return d.name === 'show';
			})) {
				child.data.show = true;
			}

			if (oldChild && oldChild.data && !isSameChild(child, oldChild) && !isAsyncPlaceholder(oldChild)) {
				// replace old child transition data with fresh one
				// important for dynamic transitions!
				var oldData = oldChild && (oldChild.data.transition = extend({},
				data));
				// handle transition mode
				if (mode === 'out-in') {
					// return placeholder node and queue update when leave finishes
					this._leaving = true;
					mergeVNodeHook(oldData, 'afterLeave',
					function() {
						this$1._leaving = false;
						this$1.$forceUpdate();
					});
					return placeholder(h, rawChild)
				} else if (mode === 'in-out') {
					if (isAsyncPlaceholder(child)) {
						return oldRawChild
					}
					var delayedLeave;
					var performLeave = function() {
						delayedLeave();
					};
					mergeVNodeHook(data, 'afterEnter', performLeave);
					mergeVNodeHook(data, 'enterCancelled', performLeave);
					mergeVNodeHook(oldData, 'delayLeave',
					function(leave) {
						delayedLeave = leave;
					});
				}
			}

			return rawChild
		}
	};

	/*  */

	// Provides transition support for list items.
	// supports move transitions using the FLIP technique.
	// Because the vdom's children update algorithm is "unstable" - i.e.
	// it doesn't guarantee the relative positioning of removed elements,
	// we force transition-group to update its children into two passes:
	// in the first pass, we remove all nodes that need to be removed,
	// triggering their leaving transition; in the second pass, we insert/move
	// into the final desired state. This way in the second pass removed
	// nodes will remain where they should be.
	var props = extend({
		tag: String,
		moveClass: String
	},
	transitionProps);

	delete props.mode;

	var TransitionGroup = {
		props: props,

		render: function render(h) {
			var tag = this.tag || this.$vnode.data.tag || 'span';
			var map = Object.create(null);
			var prevChildren = this.prevChildren = this.children;
			var rawChildren = this.$slots.
		default || [];
			var children = this.children = [];
			var transitionData = extractTransitionData(this);

			for (var i = 0; i < rawChildren.length; i++) {
				var c = rawChildren[i];
				if (c.tag) {
					if (c.key != null && String(c.key).indexOf('__vlist') !== 0) {
						children.push(c);
						map[c.key] = c; (c.data || (c.data = {})).transition = transitionData;
					} else {
						var opts = c.componentOptions;
						var name = opts ? (opts.Ctor.options.name || opts.tag || '') : c.tag;
						warn(("<transition-group> children must be keyed: <" + name + ">"));
					}
				}
			}

			if (prevChildren) {
				var kept = [];
				var removed = [];
				for (var i$1 = 0; i$1 < prevChildren.length; i$1++) {
					var c$1 = prevChildren[i$1];
					c$1.data.transition = transitionData;
					c$1.data.pos = c$1.elm.getBoundingClientRect();
					if (map[c$1.key]) {
						kept.push(c$1);
					} else {
						removed.push(c$1);
					}
				}
				this.kept = h(tag, null, kept);
				this.removed = removed;
			}

			return h(tag, null, children)
		},

		beforeUpdate: function beforeUpdate() {
			// force removing pass
			this.__patch__(this._vnode, this.kept, false, // hydrating
			true // removeOnly (!important, avoids unnecessary moves)
			);
			this._vnode = this.kept;
		},

		updated: function updated() {
			var children = this.prevChildren;
			var moveClass = this.moveClass || ((this.name || 'v') + '-move');
			if (!children.length || !this.hasMove(children[0].elm, moveClass)) {
				return
			}

			// we divide the work into three loops to avoid mixing DOM reads and writes
			// in each iteration - which helps prevent layout thrashing.
			children.forEach(callPendingCbs);
			children.forEach(recordPosition);
			children.forEach(applyTranslation);

			// force reflow to put everything in position
			var body = document.body;
			var f = body.offsetHeight; // eslint-disable-line
			children.forEach(function(c) {
				if (c.data.moved) {
					var el = c.elm;
					var s = el.style;
					addTransitionClass(el, moveClass);
					s.transform = s.WebkitTransform = s.transitionDuration = '';
					el.addEventListener(transitionEndEvent, el._moveCb = function cb(e) {
						if (!e || /transform$/.test(e.propertyName)) {
							el.removeEventListener(transitionEndEvent, cb);
							el._moveCb = null;
							removeTransitionClass(el, moveClass);
						}
					});
				}
			});
		},

		methods: {
			hasMove: function hasMove(el, moveClass) {
				/* istanbul ignore if */
				if (!hasTransition) {
					return false
				}
				/* istanbul ignore if */
				if (this._hasMove) {
					return this._hasMove
				}
				// Detect whether an element with the move class applied has
				// CSS transitions. Since the element may be inside an entering
				// transition at this very moment, we make a clone of it and remove
				// all other transition classes applied to ensure only the move class
				// is applied.
				var clone = el.cloneNode();
				if (el._transitionClasses) {
					el._transitionClasses.forEach(function(cls) {
						removeClass(clone, cls);
					});
				}
				addClass(clone, moveClass);
				clone.style.display = 'none';
				this.$el.appendChild(clone);
				var info = getTransitionInfo(clone);
				this.$el.removeChild(clone);
				return (this._hasMove = info.hasTransform)
			}
		}
	};

	function callPendingCbs(c) {
		/* istanbul ignore if */
		if (c.elm._moveCb) {
			c.elm._moveCb();
		}
		/* istanbul ignore if */
		if (c.elm._enterCb) {
			c.elm._enterCb();
		}
	}

	function recordPosition(c) {
		c.data.newPos = c.elm.getBoundingClientRect();
	}

	function applyTranslation(c) {
		var oldPos = c.data.pos;
		var newPos = c.data.newPos;
		var dx = oldPos.left - newPos.left;
		var dy = oldPos.top - newPos.top;
		if (dx || dy) {
			c.data.moved = true;
			var s = c.elm.style;
			s.transform = s.WebkitTransform = "translate(" + dx + "px," + dy + "px)";
			s.transitionDuration = '0s';
		}
	}

	var platformComponents = {
		Transition: Transition,
		TransitionGroup: TransitionGroup
	};

	/*  */

	// install platform specific utils
	Vue$3.config.mustUseProp = mustUseProp; Vue$3.config.isReservedTag = isReservedTag; Vue$3.config.isReservedAttr = isReservedAttr; Vue$3.config.getTagNamespace = getTagNamespace; Vue$3.config.isUnknownElement = isUnknownElement;

	// install platform runtime directives & components
	extend(Vue$3.options.directives, platformDirectives); extend(Vue$3.options.components, platformComponents);

	// install platform patch function
	Vue$3.prototype.__patch__ = inBrowser ? patch: noop;

	// public mount method
	Vue$3.prototype.$mount = function(el, hydrating) {
		el = el && inBrowser ? query(el) : undefined;
		return mountComponent(this, el, hydrating)
	};

	// devtools global hook
	/* istanbul ignore next */
	setTimeout(function() {
		if (config.devtools) {
			if (devtools) {
				devtools.emit('init', Vue$3);
			} else if ("development" !== 'production' && isChrome) {
				console[console.info ? 'info': 'log']('Download the Vue Devtools extension for a better development experience:\n' + 'https://github.com/vuejs/vue-devtools');
			}
		}
		if ("development" !== 'production' && config.productionTip !== false && inBrowser && typeof console !== 'undefined') {
			console[console.info ? 'info': 'log']("You are running Vue in development mode.\n" + "Make sure to turn on production mode when deploying for production.\n" + "See more tips at https://vuejs.org/guide/deployment.html");
		}
	},
	0);

	/*  */

	// check whether current browser encodes a char inside attribute values
	function shouldDecode(content, encoded) {
		var div = document.createElement('div');
		div.innerHTML = "<div a=\"" + content + "\"/>";
		return div.innerHTML.indexOf(encoded) > 0
	}

	// #3663
	// IE encodes newlines inside attribute values while other browsers don't
	var shouldDecodeNewlines = inBrowser ? shouldDecode('\n', '&#10;') : false;

	/*  */

	var defaultTagRE = /\{\{((?:.|\n)+?)\}\}/g;
	var regexEscapeRE = /[-.*+?^${}()|[\]\/\\]/g;

	var buildRegex = cached(function(delimiters) {
		var open = delimiters[0].replace(regexEscapeRE, '\\$&');
		var close = delimiters[1].replace(regexEscapeRE, '\\$&');
		return new RegExp(open + '((?:.|\\n)+?)' + close, 'g')
	});

	function parseText(text, delimiters) {
		var tagRE = delimiters ? buildRegex(delimiters) : defaultTagRE;
		if (!tagRE.test(text)) {
			return
		}
		var tokens = [];
		var lastIndex = tagRE.lastIndex = 0;
		var match, index;
		while ((match = tagRE.exec(text))) {
			index = match.index;
			// push text token
			if (index > lastIndex) {
				tokens.push(JSON.stringify(text.slice(lastIndex, index)));
			}
			// tag token
			var exp = parseFilters(match[1].trim());
			tokens.push(("_s(" + exp + ")"));
			lastIndex = index + match[0].length;
		}
		if (lastIndex < text.length) {
			tokens.push(JSON.stringify(text.slice(lastIndex)));
		}
		return tokens.join('+')
	}

	/*  */

	function transformNode(el, options) {
		var warn = options.warn || baseWarn;
		var staticClass = getAndRemoveAttr(el, 'class');
		if ("development" !== 'production' && staticClass) {
			var expression = parseText(staticClass, options.delimiters);
			if (expression) {
				warn("class=\"" + staticClass + "\": " + 'Interpolation inside attributes has been removed. ' + 'Use v-bind or the colon shorthand instead. For example, ' + 'instead of <div class="{{ val }}">, use <div :class="val">.');
			}
		}
		if (staticClass) {
			el.staticClass = JSON.stringify(staticClass);
		}
		var classBinding = getBindingAttr(el, 'class', false
		/* getStatic */
		);
		if (classBinding) {
			el.classBinding = classBinding;
		}
	}

	function genData(el) {
		var data = '';
		if (el.staticClass) {
			data += "staticClass:" + (el.staticClass) + ",";
		}
		if (el.classBinding) {
			data += "class:" + (el.classBinding) + ",";
		}
		return data
	}

	var klass$1 = {
		staticKeys: ['staticClass'],
		transformNode: transformNode,
		genData: genData
	};

	/*  */

	function transformNode$1(el, options) {
		var warn = options.warn || baseWarn;
		var staticStyle = getAndRemoveAttr(el, 'style');
		if (staticStyle) {
			/* istanbul ignore if */
			{
				var expression = parseText(staticStyle, options.delimiters);
				if (expression) {
					warn("style=\"" + staticStyle + "\": " + 'Interpolation inside attributes has been removed. ' + 'Use v-bind or the colon shorthand instead. For example, ' + 'instead of <div style="{{ val }}">, use <div :style="val">.');
				}
			}
			el.staticStyle = JSON.stringify(parseStyleText(staticStyle));
		}

		var styleBinding = getBindingAttr(el, 'style', false
		/* getStatic */
		);
		if (styleBinding) {
			el.styleBinding = styleBinding;
		}
	}

	function genData$1(el) {
		var data = '';
		if (el.staticStyle) {
			data += "staticStyle:" + (el.staticStyle) + ",";
		}
		if (el.styleBinding) {
			data += "style:(" + (el.styleBinding) + "),";
		}
		return data
	}

	var style$1 = {
		staticKeys: ['staticStyle'],
		transformNode: transformNode$1,
		genData: genData$1
	};

	var modules$1 = [klass$1, style$1];

	/*  */

	function text(el, dir) {
		if (dir.value) {
			addProp(el, 'textContent', ("_s(" + (dir.value) + ")"));
		}
	}

	/*  */

	function html(el, dir) {
		if (dir.value) {
			addProp(el, 'innerHTML', ("_s(" + (dir.value) + ")"));
		}
	}

	var directives$1 = {
		model: model,
		text: text,
		html: html
	};

	/*  */

	var isUnaryTag = makeMap('area,base,br,col,embed,frame,hr,img,input,isindex,keygen,' + 'link,meta,param,source,track,wbr');

	// Elements that you can, intentionally, leave open
	// (and which close themselves)
	var canBeLeftOpenTag = makeMap('colgroup,dd,dt,li,options,p,td,tfoot,th,thead,tr,source');

	// HTML5 tags https://html.spec.whatwg.org/multipage/indices.html#elements-3
	// Phrasing Content https://html.spec.whatwg.org/multipage/dom.html#phrasing-content
	var isNonPhrasingTag = makeMap('address,article,aside,base,blockquote,body,caption,col,colgroup,dd,' + 'details,dialog,div,dl,dt,fieldset,figcaption,figure,footer,form,' + 'h1,h2,h3,h4,h5,h6,head,header,hgroup,hr,html,legend,li,menuitem,meta,' + 'optgroup,option,param,rp,rt,source,style,summary,tbody,td,tfoot,th,thead,' + 'title,tr,track');

	/*  */

	var baseOptions = {
		expectHTML: true,
		modules: modules$1,
		directives: directives$1,
		isPreTag: isPreTag,
		isUnaryTag: isUnaryTag,
		mustUseProp: mustUseProp,
		canBeLeftOpenTag: canBeLeftOpenTag,
		isReservedTag: isReservedTag,
		getTagNamespace: getTagNamespace,
		staticKeys: genStaticKeys(modules$1)
	};

	/*  */

	var decoder;

	var he = {
		decode: function decode(html) {
			decoder = decoder || document.createElement('div');
			decoder.innerHTML = html;
			return decoder.textContent
		}
	};

	/**
 * Not type-checking this file because it's mostly vendor code.
 */

	/*!
 * HTML Parser By John Resig (ejohn.org)
 * Modified by Juriy "kangax" Zaytsev
 * Original code by Erik Arvidsson, Mozilla Public License
 * http://erik.eae.net/simplehtmlparser/simplehtmlparser.js
 */

	// Regular Expressions for parsing tags and attributes
	var attribute = /^\s*([^\s"'<>\/=]+)(?:\s*(=)\s*(?:"([^"]*)"+|'([^']*)'+|([^\s"'=<>`]+)))?/;
	// could use https://www.w3.org/TR/1999/REC-xml-names-19990114/#NT-QName
	// but for Vue templates we can enforce a simple charset
	var ncname = '[a-zA-Z_][\\w\\-\\.]*';
	var qnameCapture = "((?:" + ncname + "\\:)?" + ncname + ")";
	var startTagOpen = new RegExp(("^<" + qnameCapture));
	var startTagClose = /^\s*(\/?)>/;
	var endTag = new RegExp(("^<\\/" + qnameCapture + "[^>]*>"));
	var doctype = /^<!DOCTYPE [^>]+>/i;
	var comment = /^<!--/;
	var conditionalComment = /^<!\[/;

	var IS_REGEX_CAPTURING_BROKEN = false;
	'x'.replace(/x(.)?/g,
	function(m, g) {
		IS_REGEX_CAPTURING_BROKEN = g === '';
	});

	// Special Elements (can contain anything)
	var isPlainTextElement = makeMap('script,style,textarea', true);
	var reCache = {};

	var decodingMap = {
		'&lt;': '<',
		'&gt;': '>',
		'&quot;': '"',
		'&amp;': '&',
		'&#10;': '\n'
	};
	var encodedAttr = /&(?:lt|gt|quot|amp);/g;
	var encodedAttrWithNewLines = /&(?:lt|gt|quot|amp|#10);/g;

	// #5992
	var isIgnoreNewlineTag = makeMap('pre,textarea', true);
	var shouldIgnoreFirstNewline = function(tag, html) {
		return tag && isIgnoreNewlineTag(tag) && html[0] === '\n';
	};

	function decodeAttr(value, shouldDecodeNewlines) {
		var re = shouldDecodeNewlines ? encodedAttrWithNewLines: encodedAttr;
		return value.replace(re,
		function(match) {
			return decodingMap[match];
		})
	}

	function parseHTML(html, options) {
		var stack = [];
		var expectHTML = options.expectHTML;
		var isUnaryTag$$1 = options.isUnaryTag || no;
		var canBeLeftOpenTag$$1 = options.canBeLeftOpenTag || no;
		var index = 0;
		var last, lastTag;
		while (html) {
			last = html;
			// Make sure we're not in a plaintext content element like script/style
			if (!lastTag || !isPlainTextElement(lastTag)) {
				var textEnd = html.indexOf('<');
				if (textEnd === 0) {
					// Comment:
					if (comment.test(html)) {
						var commentEnd = html.indexOf('-->');

						if (commentEnd >= 0) {
							if (options.shouldKeepComment) {
								options.comment(html.substring(4, commentEnd));
							}
							advance(commentEnd + 3);
							continue
						}
					}

					// http://en.wikipedia.org/wiki/Conditional_comment#Downlevel-revealed_conditional_comment
					if (conditionalComment.test(html)) {
						var conditionalEnd = html.indexOf(']>');

						if (conditionalEnd >= 0) {
							advance(conditionalEnd + 2);
							continue
						}
					}

					// Doctype:
					var doctypeMatch = html.match(doctype);
					if (doctypeMatch) {
						advance(doctypeMatch[0].length);
						continue
					}

					// End tag:
					var endTagMatch = html.match(endTag);
					if (endTagMatch) {
						var curIndex = index;
						advance(endTagMatch[0].length);
						parseEndTag(endTagMatch[1], curIndex, index);
						continue
					}

					// Start tag:
					var startTagMatch = parseStartTag();
					if (startTagMatch) {
						handleStartTag(startTagMatch);
						if (shouldIgnoreFirstNewline(lastTag, html)) {
							advance(1);
						}
						continue
					}
				}

				var text = (void 0),
				rest = (void 0),
				next = (void 0);
				if (textEnd >= 0) {
					rest = html.slice(textEnd);
					while (!endTag.test(rest) && !startTagOpen.test(rest) && !comment.test(rest) && !conditionalComment.test(rest)) {
						// < in plain text, be forgiving and treat it as text
						next = rest.indexOf('<', 1);
						if (next < 0) {
							break
						}
						textEnd += next;
						rest = html.slice(textEnd);
					}
					text = html.substring(0, textEnd);
					advance(textEnd);
				}

				if (textEnd < 0) {
					text = html;
					html = '';
				}

				if (options.chars && text) {
					options.chars(text);
				}
			} else {
				var endTagLength = 0;
				var stackedTag = lastTag.toLowerCase();
				var reStackedTag = reCache[stackedTag] || (reCache[stackedTag] = new RegExp('([\\s\\S]*?)(</' + stackedTag + '[^>]*>)', 'i'));
				var rest$1 = html.replace(reStackedTag,
				function(all, text, endTag) {
					endTagLength = endTag.length;
					if (!isPlainTextElement(stackedTag) && stackedTag !== 'noscript') {
						text = text.replace(/<!--([\s\S]*?)-->/g, '$1').replace(/<!\[CDATA\[([\s\S]*?)]]>/g, '$1');
					}
					if (shouldIgnoreFirstNewline(stackedTag, text)) {
						text = text.slice(1);
					}
					if (options.chars) {
						options.chars(text);
					}
					return ''
				});
				index += html.length - rest$1.length;
				html = rest$1;
				parseEndTag(stackedTag, index - endTagLength, index);
			}

			if (html === last) {
				options.chars && options.chars(html);
				if ("development" !== 'production' && !stack.length && options.warn) {
					options.warn(("Mal-formatted tag at end of template: \"" + html + "\""));
				}
				break
			}
		}

		// Clean up any remaining tags
		parseEndTag();

		function advance(n) {
			index += n;
			html = html.substring(n);
		}

		function parseStartTag() {
			var start = html.match(startTagOpen);
			if (start) {
				var match = {
					tagName: start[1],
					attrs: [],
					start: index
				};
				advance(start[0].length);
				var end, attr;
				while (! (end = html.match(startTagClose)) && (attr = html.match(attribute))) {
					advance(attr[0].length);
					match.attrs.push(attr);
				}
				if (end) {
					match.unarySlash = end[1];
					advance(end[0].length);
					match.end = index;
					return match
				}
			}
		}

		function handleStartTag(match) {
			var tagName = match.tagName;
			var unarySlash = match.unarySlash;

			if (expectHTML) {
				if (lastTag === 'p' && isNonPhrasingTag(tagName)) {
					parseEndTag(lastTag);
				}
				if (canBeLeftOpenTag$$1(tagName) && lastTag === tagName) {
					parseEndTag(tagName);
				}
			}

			var unary = isUnaryTag$$1(tagName) || !!unarySlash;

			var l = match.attrs.length;
			var attrs = new Array(l);
			for (var i = 0; i < l; i++) {
				var args = match.attrs[i];
				// hackish work around FF bug https://bugzilla.mozilla.org/show_bug.cgi?id=369778
				if (IS_REGEX_CAPTURING_BROKEN && args[0].indexOf('""') === -1) {
					if (args[3] === '') {
						delete args[3];
					}
					if (args[4] === '') {
						delete args[4];
					}
					if (args[5] === '') {
						delete args[5];
					}
				}
				var value = args[3] || args[4] || args[5] || '';
				attrs[i] = {
					name: args[1],
					value: decodeAttr(value, options.shouldDecodeNewlines)
				};
			}

			if (!unary) {
				stack.push({
					tag: tagName,
					lowerCasedTag: tagName.toLowerCase(),
					attrs: attrs
				});
				lastTag = tagName;
			}

			if (options.start) {
				options.start(tagName, attrs, unary, match.start, match.end);
			}
		}

		function parseEndTag(tagName, start, end) {
			var pos, lowerCasedTagName;
			if (start == null) {
				start = index;
			}
			if (end == null) {
				end = index;
			}

			if (tagName) {
				lowerCasedTagName = tagName.toLowerCase();
			}

			// Find the closest opened tag of the same type
			if (tagName) {
				for (pos = stack.length - 1; pos >= 0; pos--) {
					if (stack[pos].lowerCasedTag === lowerCasedTagName) {
						break
					}
				}
			} else {
				// If no tag name is provided, clean shop
				pos = 0;
			}

			if (pos >= 0) {
				// Close all the open elements, up the stack
				for (var i = stack.length - 1; i >= pos; i--) {
					if ("development" !== 'production' && (i > pos || !tagName) && options.warn) {
						options.warn(("tag <" + (stack[i].tag) + "> has no matching end tag."));
					}
					if (options.end) {
						options.end(stack[i].tag, start, end);
					}
				}

				// Remove the open elements from the stack
				stack.length = pos;
				lastTag = pos && stack[pos - 1].tag;
			} else if (lowerCasedTagName === 'br') {
				if (options.start) {
					options.start(tagName, [], true, start, end);
				}
			} else if (lowerCasedTagName === 'p') {
				if (options.start) {
					options.start(tagName, [], false, start, end);
				}
				if (options.end) {
					options.end(tagName, start, end);
				}
			}
		}
	}

	/*  */

	var onRE = /^@|^v-on:/;
	var dirRE = /^v-|^@|^:/;
	var forAliasRE = /(.*?)\s+(?:in|of)\s+(.*)/;
	var forIteratorRE = /\((\{[^}]*\}|[^,]*),([^,]*)(?:,([^,]*))?\)/;

	var argRE = /:(.*)$/;
	var bindRE = /^:|^v-bind:/;
	var modifierRE = /\.[^.]+/g;

	var decodeHTMLCached = cached(he.decode);

	// configurable state
	var warn$2;
	var delimiters;
	var transforms;
	var preTransforms;
	var postTransforms;
	var platformIsPreTag;
	var platformMustUseProp;
	var platformGetTagNamespace;

	/**
 * Convert HTML string to AST.
 */
	function parse(template, options) {
		warn$2 = options.warn || baseWarn;

		platformIsPreTag = options.isPreTag || no;
		platformMustUseProp = options.mustUseProp || no;
		platformGetTagNamespace = options.getTagNamespace || no;

		transforms = pluckModuleFunction(options.modules, 'transformNode');
		preTransforms = pluckModuleFunction(options.modules, 'preTransformNode');
		postTransforms = pluckModuleFunction(options.modules, 'postTransformNode');

		delimiters = options.delimiters;

		var stack = [];
		var preserveWhitespace = options.preserveWhitespace !== false;
		var root;
		var currentParent;
		var inVPre = false;
		var inPre = false;
		var warned = false;

		function warnOnce(msg) {
			if (!warned) {
				warned = true;
				warn$2(msg);
			}
		}

		function endPre(element) {
			// check pre state
			if (element.pre) {
				inVPre = false;
			}
			if (platformIsPreTag(element.tag)) {
				inPre = false;
			}
		}

		parseHTML(template, {
			warn: warn$2,
			expectHTML: options.expectHTML,
			isUnaryTag: options.isUnaryTag,
			canBeLeftOpenTag: options.canBeLeftOpenTag,
			shouldDecodeNewlines: options.shouldDecodeNewlines,
			shouldKeepComment: options.comments,
			start: function start(tag, attrs, unary) {
				// check namespace.
				// inherit parent ns if there is one
				var ns = (currentParent && currentParent.ns) || platformGetTagNamespace(tag);

				// handle IE svg bug
				/* istanbul ignore if */
				if (isIE && ns === 'svg') {
					attrs = guardIESVGBug(attrs);
				}

				var element = {
					type: 1,
					tag: tag,
					attrsList: attrs,
					attrsMap: makeAttrsMap(attrs),
					parent: currentParent,
					children: []
				};
				if (ns) {
					element.ns = ns;
				}

				if (isForbiddenTag(element) && !isServerRendering()) {
					element.forbidden = true;
					"development" !== 'production' && warn$2('Templates should only be responsible for mapping the state to the ' + 'UI. Avoid placing tags with side-effects in your templates, such as ' + "<" + tag + ">" + ', as they will not be parsed.');
				}

				// apply pre-transforms
				for (var i = 0; i < preTransforms.length; i++) {
					preTransforms[i](element, options);
				}

				if (!inVPre) {
					processPre(element);
					if (element.pre) {
						inVPre = true;
					}
				}
				if (platformIsPreTag(element.tag)) {
					inPre = true;
				}
				if (inVPre) {
					processRawAttrs(element);
				} else {
					processFor(element);
					processIf(element);
					processOnce(element);
					processKey(element);

					// determine whether this is a plain element after
					// removing structural attributes
					element.plain = !element.key && !attrs.length;

					processRef(element);
					processSlot(element);
					processComponent(element);
					for (var i$1 = 0; i$1 < transforms.length; i$1++) {
						transforms[i$1](element, options);
					}
					processAttrs(element);
				}

				function checkRootConstraints(el) {
					{
						if (el.tag === 'slot' || el.tag === 'template') {
							warnOnce("Cannot use <" + (el.tag) + "> as component root element because it may " + 'contain multiple nodes.');
						}
						if (el.attrsMap.hasOwnProperty('v-for')) {
							warnOnce('Cannot use v-for on stateful component root element because ' + 'it renders multiple elements.');
						}
					}
				}

				// tree management
				if (!root) {
					root = element;
					checkRootConstraints(root);
				} else if (!stack.length) {
					// allow root elements with v-if, v-else-if and v-else
					if (root.
					if && (element.elseif || element.
					else)) {
						checkRootConstraints(element);
						addIfCondition(root, {
							exp: element.elseif,
							block: element
						});
					} else {
						warnOnce("Component template should contain exactly one root element. " + "If you are using v-if on multiple elements, " + "use v-else-if to chain them instead.");
					}
				}
				if (currentParent && !element.forbidden) {
					if (element.elseif || element.
					else) {
						processIfConditions(element, currentParent);
					} else if (element.slotScope) { // scoped slot
						currentParent.plain = false;
						var name = element.slotTarget || '"default"'; (currentParent.scopedSlots || (currentParent.scopedSlots = {}))[name] = element;
					} else {
						currentParent.children.push(element);
						element.parent = currentParent;
					}
				}
				if (!unary) {
					currentParent = element;
					stack.push(element);
				} else {
					endPre(element);
				}
				// apply post-transforms
				for (var i$2 = 0; i$2 < postTransforms.length; i$2++) {
					postTransforms[i$2](element, options);
				}
			},

			end: function end() {
				// remove trailing whitespace
				var element = stack[stack.length - 1];
				var lastNode = element.children[element.children.length - 1];
				if (lastNode && lastNode.type === 3 && lastNode.text === ' ' && !inPre) {
					element.children.pop();
				}
				// pop stack
				stack.length -= 1;
				currentParent = stack[stack.length - 1];
				endPre(element);
			},

			chars: function chars(text) {
				if (!currentParent) {
					{
						if (text === template) {
							warnOnce('Component template requires a root element, rather than just text.');
						} else if ((text = text.trim())) {
							warnOnce(("text \"" + text + "\" outside root element will be ignored."));
						}
					}
					return
				}
				// IE textarea placeholder bug
				/* istanbul ignore if */
				if (isIE && currentParent.tag === 'textarea' && currentParent.attrsMap.placeholder === text) {
					return
				}
				var children = currentParent.children;
				text = inPre || text.trim() ? isTextTag(currentParent) ? text: decodeHTMLCached(text)
				// only preserve whitespace if its not right after a starting tag
				: preserveWhitespace && children.length ? ' ': '';
				if (text) {
					var expression;
					if (!inVPre && text !== ' ' && (expression = parseText(text, delimiters))) {
						children.push({
							type: 2,
							expression: expression,
							text: text
						});
					} else if (text !== ' ' || !children.length || children[children.length - 1].text !== ' ') {
						children.push({
							type: 3,
							text: text
						});
					}
				}
			},
			comment: function comment(text) {
				currentParent.children.push({
					type: 3,
					text: text,
					isComment: true
				});
			}
		});
		return root
	}

	function processPre(el) {
		if (getAndRemoveAttr(el, 'v-pre') != null) {
			el.pre = true;
		}
	}

	function processRawAttrs(el) {
		var l = el.attrsList.length;
		if (l) {
			var attrs = el.attrs = new Array(l);
			for (var i = 0; i < l; i++) {
				attrs[i] = {
					name: el.attrsList[i].name,
					value: JSON.stringify(el.attrsList[i].value)
				};
			}
		} else if (!el.pre) {
			// non root node in pre blocks with no attributes
			el.plain = true;
		}
	}

	function processKey(el) {
		var exp = getBindingAttr(el, 'key');
		if (exp) {
			if ("development" !== 'production' && el.tag === 'template') {
				warn$2("<template> cannot be keyed. Place the key on real elements instead.");
			}
			el.key = exp;
		}
	}

	function processRef(el) {
		var ref = getBindingAttr(el, 'ref');
		if (ref) {
			el.ref = ref;
			el.refInFor = checkInFor(el);
		}
	}

	function processFor(el) {
		var exp;
		if ((exp = getAndRemoveAttr(el, 'v-for'))) {
			var inMatch = exp.match(forAliasRE);
			if (!inMatch) {
				"development" !== 'production' && warn$2(("Invalid v-for expression: " + exp));
				return
			}
			el.
			for = inMatch[2].trim();
			var alias = inMatch[1].trim();
			var iteratorMatch = alias.match(forIteratorRE);
			if (iteratorMatch) {
				el.alias = iteratorMatch[1].trim();
				el.iterator1 = iteratorMatch[2].trim();
				if (iteratorMatch[3]) {
					el.iterator2 = iteratorMatch[3].trim();
				}
			} else {
				el.alias = alias;
			}
		}
	}

	function processIf(el) {
		var exp = getAndRemoveAttr(el, 'v-if');
		if (exp) {
			el.
			if = exp;
			addIfCondition(el, {
				exp: exp,
				block: el
			});
		} else {
			if (getAndRemoveAttr(el, 'v-else') != null) {
				el.
				else = true;
			}
			var elseif = getAndRemoveAttr(el, 'v-else-if');
			if (elseif) {
				el.elseif = elseif;
			}
		}
	}

	function processIfConditions(el, parent) {
		var prev = findPrevElement(parent.children);
		if (prev && prev.
		if) {
			addIfCondition(prev, {
				exp: el.elseif,
				block: el
			});
		} else {
			warn$2("v-" + (el.elseif ? ('else-if="' + el.elseif + '"') : 'else') + " " + "used on element <" + (el.tag) + "> without corresponding v-if.");
		}
	}

	function findPrevElement(children) {
		var i = children.length;
		while (i--) {
			if (children[i].type === 1) {
				return children[i]
			} else {
				if ("development" !== 'production' && children[i].text !== ' ') {
					warn$2("text \"" + (children[i].text.trim()) + "\" between v-if and v-else(-if) " + "will be ignored.");
				}
				children.pop();
			}
		}
	}

	function addIfCondition(el, condition) {
		if (!el.ifConditions) {
			el.ifConditions = [];
		}
		el.ifConditions.push(condition);
	}

	function processOnce(el) {
		var once$$1 = getAndRemoveAttr(el, 'v-once');
		if (once$$1 != null) {
			el.once = true;
		}
	}

	function processSlot(el) {
		if (el.tag === 'slot') {
			el.slotName = getBindingAttr(el, 'name');
			if ("development" !== 'production' && el.key) {
				warn$2("`key` does not work on <slot> because slots are abstract outlets " + "and can possibly expand into multiple elements. " + "Use the key on a wrapping element instead.");
			}
		} else {
			var slotTarget = getBindingAttr(el, 'slot');
			if (slotTarget) {
				el.slotTarget = slotTarget === '""' ? '"default"': slotTarget;
				// preserve slot as an attribute for native shadow DOM compat
				addAttr(el, 'slot', slotTarget);
			}
			if (el.tag === 'template') {
				el.slotScope = getAndRemoveAttr(el, 'scope');
			}
		}
	}

	function processComponent(el) {
		var binding;
		if ((binding = getBindingAttr(el, 'is'))) {
			el.component = binding;
		}
		if (getAndRemoveAttr(el, 'inline-template') != null) {
			el.inlineTemplate = true;
		}
	}

	function processAttrs(el) {
		var list = el.attrsList;
		var i, l, name, rawName, value, modifiers, isProp;
		for (i = 0, l = list.length; i < l; i++) {
			name = rawName = list[i].name;
			value = list[i].value;
			if (dirRE.test(name)) {
				// mark element as dynamic
				el.hasBindings = true;
				// modifiers
				modifiers = parseModifiers(name);
				if (modifiers) {
					name = name.replace(modifierRE, '');
				}
				if (bindRE.test(name)) { // v-bind
					name = name.replace(bindRE, '');
					value = parseFilters(value);
					isProp = false;
					if (modifiers) {
						if (modifiers.prop) {
							isProp = true;
							name = camelize(name);
							if (name === 'innerHtml') {
								name = 'innerHTML';
							}
						}
						if (modifiers.camel) {
							name = camelize(name);
						}
						if (modifiers.sync) {
							addHandler(el, ("update:" + (camelize(name))), genAssignmentCode(value, "$event"));
						}
					}
					if (isProp || (!el.component && platformMustUseProp(el.tag, el.attrsMap.type, name))) {
						addProp(el, name, value);
					} else {
						addAttr(el, name, value);
					}
				} else if (onRE.test(name)) { // v-on
					name = name.replace(onRE, '');
					addHandler(el, name, value, modifiers, false, warn$2);
				} else { // normal directives
					name = name.replace(dirRE, '');
					// parse arg
					var argMatch = name.match(argRE);
					var arg = argMatch && argMatch[1];
					if (arg) {
						name = name.slice(0, -(arg.length + 1));
					}
					addDirective(el, name, rawName, value, arg, modifiers);
					if ("development" !== 'production' && name === 'model') {
						checkForAliasModel(el, value);
					}
				}
			} else {
				// literal attribute
				{
					var expression = parseText(value, delimiters);
					if (expression) {
						warn$2(name + "=\"" + value + "\": " + 'Interpolation inside attributes has been removed. ' + 'Use v-bind or the colon shorthand instead. For example, ' + 'instead of <div id="{{ val }}">, use <div :id="val">.');
					}
				}
				addAttr(el, name, JSON.stringify(value));
			}
		}
	}

	function checkInFor(el) {
		var parent = el;
		while (parent) {
			if (parent.
			for !== undefined) {
				return true
			}
			parent = parent.parent;
		}
		return false
	}

	function parseModifiers(name) {
		var match = name.match(modifierRE);
		if (match) {
			var ret = {};
			match.forEach(function(m) {
				ret[m.slice(1)] = true;
			});
			return ret
		}
	}

	function makeAttrsMap(attrs) {
		var map = {};
		for (var i = 0,
		l = attrs.length; i < l; i++) {
			if ("development" !== 'production' && map[attrs[i].name] && !isIE && !isEdge) {
				warn$2('duplicate attribute: ' + attrs[i].name);
			}
			map[attrs[i].name] = attrs[i].value;
		}
		return map
	}

	// for script (e.g. type="x/template") or style, do not decode content
	function isTextTag(el) {
		return el.tag === 'script' || el.tag === 'style'
	}

	function isForbiddenTag(el) {
		return (el.tag === 'style' || (el.tag === 'script' && (!el.attrsMap.type || el.attrsMap.type === 'text/javascript')))
	}

	var ieNSBug = /^xmlns:NS\d+/;
	var ieNSPrefix = /^NS\d+:/;

	/* istanbul ignore next */
	function guardIESVGBug(attrs) {
		var res = [];
		for (var i = 0; i < attrs.length; i++) {
			var attr = attrs[i];
			if (!ieNSBug.test(attr.name)) {
				attr.name = attr.name.replace(ieNSPrefix, '');
				res.push(attr);
			}
		}
		return res
	}

	function checkForAliasModel(el, value) {
		var _el = el;
		while (_el) {
			if (_el.
			for && _el.alias === value) {
				warn$2("<" + (el.tag) + " v-model=\"" + value + "\">: " + "You are binding v-model directly to a v-for iteration alias. " + "This will not be able to modify the v-for source array because " + "writing to the alias is like modifying a function local variable. " + "Consider using an array of objects and use v-model on an object property instead.");
			}
			_el = _el.parent;
		}
	}

	/*  */

	var isStaticKey;
	var isPlatformReservedTag;

	var genStaticKeysCached = cached(genStaticKeys$1);

	/**
 * Goal of the optimizer: walk the generated template AST tree
 * and detect sub-trees that are purely static, i.e. parts of
 * the DOM that never needs to change.
 *
 * Once we detect these sub-trees, we can:
 *
 * 1. Hoist them into constants, so that we no longer need to
 *    create fresh nodes for them on each re-render;
 * 2. Completely skip them in the patching process.
 */
	function optimize(root, options) {
		if (!root) {
			return
		}
		isStaticKey = genStaticKeysCached(options.staticKeys || '');
		isPlatformReservedTag = options.isReservedTag || no;
		// first pass: mark all non-static nodes.
		markStatic$1(root);
		// second pass: mark static roots.
		markStaticRoots(root, false);
	}

	function genStaticKeys$1(keys) {
		return makeMap('type,tag,attrsList,attrsMap,plain,parent,children,attrs' + (keys ? ',' + keys: ''))
	}

	function markStatic$1(node) {
		node.static = isStatic(node);
		if (node.type === 1) {
			// do not make component slot content static. this avoids
			// 1. components not able to mutate slot nodes
			// 2. static slot content fails for hot-reloading
			if (!isPlatformReservedTag(node.tag) && node.tag !== 'slot' && node.attrsMap['inline-template'] == null) {
				return
			}
			for (var i = 0,
			l = node.children.length; i < l; i++) {
				var child = node.children[i];
				markStatic$1(child);
				if (!child.static) {
					node.static = false;
				}
			}
			if (node.ifConditions) {
				for (var i$1 = 1,
				l$1 = node.ifConditions.length; i$1 < l$1; i$1++) {
					var block = node.ifConditions[i$1].block;
					markStatic$1(block);
					if (!block.static) {
						node.static = false;
					}
				}
			}
		}
	}

	function markStaticRoots(node, isInFor) {
		if (node.type === 1) {
			if (node.static || node.once) {
				node.staticInFor = isInFor;
			}
			// For a node to qualify as a static root, it should have children that
			// are not just static text. Otherwise the cost of hoisting out will
			// outweigh the benefits and it's better off to just always render it fresh.
			if (node.static && node.children.length && !(node.children.length === 1 && node.children[0].type === 3)) {
				node.staticRoot = true;
				return
			} else {
				node.staticRoot = false;
			}
			if (node.children) {
				for (var i = 0,
				l = node.children.length; i < l; i++) {
					markStaticRoots(node.children[i], isInFor || !!node.
					for);
				}
			}
			if (node.ifConditions) {
				for (var i$1 = 1,
				l$1 = node.ifConditions.length; i$1 < l$1; i$1++) {
					markStaticRoots(node.ifConditions[i$1].block, isInFor);
				}
			}
		}
	}

	function isStatic(node) {
		if (node.type === 2) { // expression
			return false
		}
		if (node.type === 3) { // text
			return true
		}
		return !! (node.pre || (!node.hasBindings && // no dynamic bindings
		! node.
		if && !node.
		for && // not v-if or v-for or v-else
		! isBuiltInTag(node.tag) && // not a built-in
		isPlatformReservedTag(node.tag) && // not a component
		! isDirectChildOfTemplateFor(node) && Object.keys(node).every(isStaticKey)))
	}

	function isDirectChildOfTemplateFor(node) {
		while (node.parent) {
			node = node.parent;
			if (node.tag !== 'template') {
				return false
			}
			if (node.
			for) {
				return true
			}
		}
		return false
	}

	/*  */

	var fnExpRE = /^\s*([\w$_]+|\([^)]*?\))\s*=>|^function\s*\(/;
	var simplePathRE = /^\s*[A-Za-z_$][\w$]*(?:\.[A-Za-z_$][\w$]*|\['.*?']|\[".*?"]|\[\d+]|\[[A-Za-z_$][\w$]*])*\s*$/;

	// keyCode aliases
	var keyCodes = {
		esc: 27,
		tab: 9,
		enter: 13,
		space: 32,
		up: 38,
		left: 37,
		right: 39,
		down: 40,
		'delete': [8, 46]
	};

	// #4868: modifiers that prevent the execution of the listener
	// need to explicitly return null so that we can determine whether to remove
	// the listener for .once
	var genGuard = function(condition) {
		return ("if(" + condition + ")return null;");
	};

	var modifierCode = {
		stop: '$event.stopPropagation();',
		prevent: '$event.preventDefault();',
		self: genGuard("$event.target !== $event.currentTarget"),
		ctrl: genGuard("!$event.ctrlKey"),
		shift: genGuard("!$event.shiftKey"),
		alt: genGuard("!$event.altKey"),
		meta: genGuard("!$event.metaKey"),
		left: genGuard("'button' in $event && $event.button !== 0"),
		middle: genGuard("'button' in $event && $event.button !== 1"),
		right: genGuard("'button' in $event && $event.button !== 2")
	};

	function genHandlers(events, isNative, warn) {
		var res = isNative ? 'nativeOn:{': 'on:{';
		for (var name in events) {
			var handler = events[name];
			// #5330: warn click.right, since right clicks do not actually fire click events.
			if ("development" !== 'production' && name === 'click' && handler && handler.modifiers && handler.modifiers.right) {
				warn("Use \"contextmenu\" instead of \"click.right\" since right clicks " + "do not actually fire \"click\" events.");
			}
			res += "\"" + name + "\":" + (genHandler(name, handler)) + ",";
		}
		return res.slice(0, -1) + '}'
	}

	function genHandler(name, handler) {
		if (!handler) {
			return 'function(){}'
		}

		if (Array.isArray(handler)) {
			return ("[" + (handler.map(function(handler) {
				return genHandler(name, handler);
			}).join(',')) + "]")
		}

		var isMethodPath = simplePathRE.test(handler.value);
		var isFunctionExpression = fnExpRE.test(handler.value);

		if (!handler.modifiers) {
			return isMethodPath || isFunctionExpression ? handler.value: ("function($event){" + (handler.value) + "}") // inline statement
		} else {
			var code = '';
			var genModifierCode = '';
			var keys = [];
			for (var key in handler.modifiers) {
				if (modifierCode[key]) {
					genModifierCode += modifierCode[key];
					// left/right
					if (keyCodes[key]) {
						keys.push(key);
					}
				} else {
					keys.push(key);
				}
			}
			if (keys.length) {
				code += genKeyFilter(keys);
			}
			// Make sure modifiers like prevent and stop get executed after key filtering
			if (genModifierCode) {
				code += genModifierCode;
			}
			var handlerCode = isMethodPath ? handler.value + '($event)': isFunctionExpression ? ("(" + (handler.value) + ")($event)") : handler.value;
			return ("function($event){" + code + handlerCode + "}")
		}
	}

	function genKeyFilter(keys) {
		return ("if(!('button' in $event)&&" + (keys.map(genFilterCode).join('&&')) + ")return null;")
	}

	function genFilterCode(key) {
		var keyVal = parseInt(key, 10);
		if (keyVal) {
			return ("$event.keyCode!==" + keyVal)
		}
		var alias = keyCodes[key];
		return ("_k($event.keyCode," + (JSON.stringify(key)) + (alias ? ',' + JSON.stringify(alias) : '') + ")")
	}

	/*  */

	function on(el, dir) {
		if ("development" !== 'production' && dir.modifiers) {
			warn("v-on without argument does not support modifiers.");
		}
		el.wrapListeners = function(code) {
			return ("_g(" + code + "," + (dir.value) + ")");
		};
	}

	/*  */

	function bind$1(el, dir) {
		el.wrapData = function(code) {
			return ("_b(" + code + ",'" + (el.tag) + "'," + (dir.value) + "," + (dir.modifiers && dir.modifiers.prop ? 'true': 'false') + (dir.modifiers && dir.modifiers.sync ? ',true': '') + ")")
		};
	}

	/*  */

	var baseDirectives = {
		on: on,
		bind: bind$1,
		cloak: noop
	};

	/*  */

	var CodegenState = function CodegenState(options) {
		this.options = options;
		this.warn = options.warn || baseWarn;
		this.transforms = pluckModuleFunction(options.modules, 'transformCode');
		this.dataGenFns = pluckModuleFunction(options.modules, 'genData');
		this.directives = extend(extend({},
		baseDirectives), options.directives);
		var isReservedTag = options.isReservedTag || no;
		this.maybeComponent = function(el) {
			return ! isReservedTag(el.tag);
		};
		this.onceId = 0;
		this.staticRenderFns = [];
	};

	function generate(ast, options) {
		var state = new CodegenState(options);
		var code = ast ? genElement(ast, state) : '_c("div")';
		return {
			render: ("with(this){return " + code + "}"),
			staticRenderFns: state.staticRenderFns
		}
	}

	function genElement(el, state) {
		if (el.staticRoot && !el.staticProcessed) {
			return genStatic(el, state)
		} else if (el.once && !el.onceProcessed) {
			return genOnce(el, state)
		} else if (el.
		for && !el.forProcessed) {
			return genFor(el, state)
		} else if (el.
		if && !el.ifProcessed) {
			return genIf(el, state)
		} else if (el.tag === 'template' && !el.slotTarget) {
			return genChildren(el, state) || 'void 0'
		} else if (el.tag === 'slot') {
			return genSlot(el, state)
		} else {
			// component or element
			var code;
			if (el.component) {
				code = genComponent(el.component, el, state);
			} else {
				var data = el.plain ? undefined: genData$2(el, state);

				var children = el.inlineTemplate ? null: genChildren(el, state, true);
				code = "_c('" + (el.tag) + "'" + (data ? ("," + data) : '') + (children ? ("," + children) : '') + ")";
			}
			// module transforms
			for (var i = 0; i < state.transforms.length; i++) {
				code = state.transforms[i](el, code);
			}
			return code
		}
	}

	// hoist static sub-trees out
	function genStatic(el, state) {
		el.staticProcessed = true;
		state.staticRenderFns.push(("with(this){return " + (genElement(el, state)) + "}"));
		return ("_m(" + (state.staticRenderFns.length - 1) + (el.staticInFor ? ',true': '') + ")")
	}

	// v-once
	function genOnce(el, state) {
		el.onceProcessed = true;
		if (el.
		if && !el.ifProcessed) {
			return genIf(el, state)
		} else if (el.staticInFor) {
			var key = '';
			var parent = el.parent;
			while (parent) {
				if (parent.
				for) {
					key = parent.key;
					break
				}
				parent = parent.parent;
			}
			if (!key) {
				"development" !== 'production' && state.warn("v-once can only be used inside v-for that is keyed. ");
				return genElement(el, state)
			}
			return ("_o(" + (genElement(el, state)) + "," + (state.onceId++) + "," + key + ")")
		} else {
			return genStatic(el, state)
		}
	}

	function genIf(el, state, altGen, altEmpty) {
		el.ifProcessed = true; // avoid recursion
		return genIfConditions(el.ifConditions.slice(), state, altGen, altEmpty)
	}

	function genIfConditions(conditions, state, altGen, altEmpty) {
		if (!conditions.length) {
			return altEmpty || '_e()'
		}

		var condition = conditions.shift();
		if (condition.exp) {
			return ("(" + (condition.exp) + ")?" + (genTernaryExp(condition.block)) + ":" + (genIfConditions(conditions, state, altGen, altEmpty)))
		} else {
			return ("" + (genTernaryExp(condition.block)))
		}

		// v-if with v-once should generate code like (a)?_m(0):_m(1)
		function genTernaryExp(el) {
			return altGen ? altGen(el, state) : el.once ? genOnce(el, state) : genElement(el, state)
		}
	}

	function genFor(el, state, altGen, altHelper) {
		var exp = el.
		for;
		var alias = el.alias;
		var iterator1 = el.iterator1 ? ("," + (el.iterator1)) : '';
		var iterator2 = el.iterator2 ? ("," + (el.iterator2)) : '';

		if ("development" !== 'production' && state.maybeComponent(el) && el.tag !== 'slot' && el.tag !== 'template' && !el.key) {
			state.warn("<" + (el.tag) + " v-for=\"" + alias + " in " + exp + "\">: component lists rendered with " + "v-for should have explicit keys. " + "See https://vuejs.org/guide/list.html#key for more info.", true
			/* tip */
			);
		}

		el.forProcessed = true; // avoid recursion
		return (altHelper || '_l') + "((" + exp + ")," + "function(" + alias + iterator1 + iterator2 + "){" + "return " + ((altGen || genElement)(el, state)) + '})'
	}

	function genData$2(el, state) {
		var data = '{';

		// directives first.
		// directives may mutate the el's other properties before they are generated.
		var dirs = genDirectives(el, state);
		if (dirs) {
			data += dirs + ',';
		}

		// key
		if (el.key) {
			data += "key:" + (el.key) + ",";
		}
		// ref
		if (el.ref) {
			data += "ref:" + (el.ref) + ",";
		}
		if (el.refInFor) {
			data += "refInFor:true,";
		}
		// pre
		if (el.pre) {
			data += "pre:true,";
		}
		// record original tag name for components using "is" attribute
		if (el.component) {
			data += "tag:\"" + (el.tag) + "\",";
		}
		// module data generation functions
		for (var i = 0; i < state.dataGenFns.length; i++) {
			data += state.dataGenFns[i](el);
		}
		// attributes
		if (el.attrs) {
			data += "attrs:{" + (genProps(el.attrs)) + "},";
		}
		// DOM props
		if (el.props) {
			data += "domProps:{" + (genProps(el.props)) + "},";
		}
		// event handlers
		if (el.events) {
			data += (genHandlers(el.events, false, state.warn)) + ",";
		}
		if (el.nativeEvents) {
			data += (genHandlers(el.nativeEvents, true, state.warn)) + ",";
		}
		// slot target
		if (el.slotTarget) {
			data += "slot:" + (el.slotTarget) + ",";
		}
		// scoped slots
		if (el.scopedSlots) {
			data += (genScopedSlots(el.scopedSlots, state)) + ",";
		}
		// component v-model
		if (el.model) {
			data += "model:{value:" + (el.model.value) + ",callback:" + (el.model.callback) + ",expression:" + (el.model.expression) + "},";
		}
		// inline-template
		if (el.inlineTemplate) {
			var inlineTemplate = genInlineTemplate(el, state);
			if (inlineTemplate) {
				data += inlineTemplate + ",";
			}
		}
		data = data.replace(/,$/, '') + '}';
		// v-bind data wrap
		if (el.wrapData) {
			data = el.wrapData(data);
		}
		// v-on data wrap
		if (el.wrapListeners) {
			data = el.wrapListeners(data);
		}
		return data
	}

	function genDirectives(el, state) {
		var dirs = el.directives;
		if (!dirs) {
			return
		}
		var res = 'directives:[';
		var hasRuntime = false;
		var i, l, dir, needRuntime;
		for (i = 0, l = dirs.length; i < l; i++) {
			dir = dirs[i];
			needRuntime = true;
			var gen = state.directives[dir.name];
			if (gen) {
				// compile-time directive that manipulates AST.
				// returns true if it also needs a runtime counterpart.
				needRuntime = !!gen(el, dir, state.warn);
			}
			if (needRuntime) {
				hasRuntime = true;
				res += "{name:\"" + (dir.name) + "\",rawName:\"" + (dir.rawName) + "\"" + (dir.value ? (",value:(" + (dir.value) + "),expression:" + (JSON.stringify(dir.value))) : '') + (dir.arg ? (",arg:\"" + (dir.arg) + "\"") : '') + (dir.modifiers ? (",modifiers:" + (JSON.stringify(dir.modifiers))) : '') + "},";
			}
		}
		if (hasRuntime) {
			return res.slice(0, -1) + ']'
		}
	}

	function genInlineTemplate(el, state) {
		var ast = el.children[0];
		if ("development" !== 'production' && (el.children.length > 1 || ast.type !== 1)) {
			state.warn('Inline-template components must have exactly one child element.');
		}
		if (ast.type === 1) {
			var inlineRenderFns = generate(ast, state.options);
			return ("inlineTemplate:{render:function(){" + (inlineRenderFns.render) + "},staticRenderFns:[" + (inlineRenderFns.staticRenderFns.map(function(code) {
				return ("function(){" + code + "}");
			}).join(',')) + "]}")
		}
	}

	function genScopedSlots(slots, state) {
		return ("scopedSlots:_u([" + (Object.keys(slots).map(function(key) {
			return genScopedSlot(key, slots[key], state)
		}).join(',')) + "])")
	}

	function genScopedSlot(key, el, state) {
		if (el.
		for && !el.forProcessed) {
			return genForScopedSlot(key, el, state)
		}
		return "{key:" + key + ",fn:function(" + (String(el.attrsMap.scope)) + "){" + "return " + (el.tag === 'template' ? genChildren(el, state) || 'void 0': genElement(el, state)) + "}}"
	}

	function genForScopedSlot(key, el, state) {
		var exp = el.
		for;
		var alias = el.alias;
		var iterator1 = el.iterator1 ? ("," + (el.iterator1)) : '';
		var iterator2 = el.iterator2 ? ("," + (el.iterator2)) : '';
		el.forProcessed = true; // avoid recursion
		return "_l((" + exp + ")," + "function(" + alias + iterator1 + iterator2 + "){" + "return " + (genScopedSlot(key, el, state)) + '})'
	}

	function genChildren(el, state, checkSkip, altGenElement, altGenNode) {
		var children = el.children;
		if (children.length) {
			var el$1 = children[0];
			// optimize single v-for
			if (children.length === 1 && el$1.
			for && el$1.tag !== 'template' && el$1.tag !== 'slot') {
				return (altGenElement || genElement)(el$1, state)
			}
			var normalizationType = checkSkip ? getNormalizationType(children, state.maybeComponent) : 0;
			var gen = altGenNode || genNode;
			return ("[" + (children.map(function(c) {
				return gen(c, state);
			}).join(',')) + "]" + (normalizationType ? ("," + normalizationType) : ''))
		}
	}

	// determine the normalization needed for the children array.
	// 0: no normalization needed
	// 1: simple normalization needed (possible 1-level deep nested array)
	// 2: full normalization needed
	function getNormalizationType(children, maybeComponent) {
		var res = 0;
		for (var i = 0; i < children.length; i++) {
			var el = children[i];
			if (el.type !== 1) {
				continue
			}
			if (needsNormalization(el) || (el.ifConditions && el.ifConditions.some(function(c) {
				return needsNormalization(c.block);
			}))) {
				res = 2;
				break
			}
			if (maybeComponent(el) || (el.ifConditions && el.ifConditions.some(function(c) {
				return maybeComponent(c.block);
			}))) {
				res = 1;
			}
		}
		return res
	}

	function needsNormalization(el) {
		return el.
		for !== undefined || el.tag === 'template' || el.tag === 'slot'
	}

	function genNode(node, state) {
		if (node.type === 1) {
			return genElement(node, state)
		}
		if (node.type === 3 && node.isComment) {
			return genComment(node)
		} else {
			return genText(node)
		}
	}

	function genText(text) {
		return ("_v(" + (text.type === 2 ? text.expression // no need for () because already wrapped in _s()
		: transformSpecialNewlines(JSON.stringify(text.text))) + ")")
	}

	function genComment(comment) {
		return ("_e(" + (JSON.stringify(comment.text)) + ")")
	}

	function genSlot(el, state) {
		var slotName = el.slotName || '"default"';
		var children = genChildren(el, state);
		var res = "_t(" + slotName + (children ? ("," + children) : '');
		var attrs = el.attrs && ("{" + (el.attrs.map(function(a) {
			return ((camelize(a.name)) + ":" + (a.value));
		}).join(',')) + "}");
		var bind$$1 = el.attrsMap['v-bind'];
		if ((attrs || bind$$1) && !children) {
			res += ",null";
		}
		if (attrs) {
			res += "," + attrs;
		}
		if (bind$$1) {
			res += (attrs ? '': ',null') + "," + bind$$1;
		}
		return res + ')'
	}

	// componentName is el.component, take it as argument to shun flow's pessimistic refinement
	function genComponent(componentName, el, state) {
		var children = el.inlineTemplate ? null: genChildren(el, state, true);
		return ("_c(" + componentName + "," + (genData$2(el, state)) + (children ? ("," + children) : '') + ")")
	}

	function genProps(props) {
		var res = '';
		for (var i = 0; i < props.length; i++) {
			var prop = props[i];
			res += "\"" + (prop.name) + "\":" + (transformSpecialNewlines(prop.value)) + ",";
		}
		return res.slice(0, -1)
	}

	// #3895, #4268
	function transformSpecialNewlines(text) {
		return text.replace(/\u2028/g, '\\u2028').replace(/\u2029/g, '\\u2029')
	}

	/*  */

	// these keywords should not appear inside expressions, but operators like
	// typeof, instanceof and in are allowed
	var prohibitedKeywordRE = new RegExp('\\b' + ('do,if,for,let,new,try,var,case,else,with,await,break,catch,class,const,' + 'super,throw,while,yield,delete,export,import,return,switch,default,' + 'extends,finally,continue,debugger,function,arguments').split(',').join('\\b|\\b') + '\\b');

	// these unary operators should not be used as property/method names
	var unaryOperatorsRE = new RegExp('\\b' + ('delete,typeof,void').split(',').join('\\s*\\([^\\)]*\\)|\\b') + '\\s*\\([^\\)]*\\)');

	// check valid identifier for v-for
	var identRE = /[A-Za-z_$][\w$]*/;

	// strip strings in expressions
	var stripStringRE = /'(?:[^'\\]|\\.)*'|"(?:[^"\\]|\\.)*"|`(?:[^`\\]|\\.)*\$\{|\}(?:[^`\\]|\\.)*`|`(?:[^`\\]|\\.)*`/g;

	// detect problematic expressions in a template
	function detectErrors(ast) {
		var errors = [];
		if (ast) {
			checkNode(ast, errors);
		}
		return errors
	}

	function checkNode(node, errors) {
		if (node.type === 1) {
			for (var name in node.attrsMap) {
				if (dirRE.test(name)) {
					var value = node.attrsMap[name];
					if (value) {
						if (name === 'v-for') {
							checkFor(node, ("v-for=\"" + value + "\""), errors);
						} else if (onRE.test(name)) {
							checkEvent(value, (name + "=\"" + value + "\""), errors);
						} else {
							checkExpression(value, (name + "=\"" + value + "\""), errors);
						}
					}
				}
			}
			if (node.children) {
				for (var i = 0; i < node.children.length; i++) {
					checkNode(node.children[i], errors);
				}
			}
		} else if (node.type === 2) {
			checkExpression(node.expression, node.text, errors);
		}
	}

	function checkEvent(exp, text, errors) {
		var stipped = exp.replace(stripStringRE, '');
		var keywordMatch = stipped.match(unaryOperatorsRE);
		if (keywordMatch && stipped.charAt(keywordMatch.index - 1) !== '$') {
			errors.push("avoid using JavaScript unary operator as property name: " + "\"" + (keywordMatch[0]) + "\" in expression " + (text.trim()));
		}
		checkExpression(exp, text, errors);
	}

	function checkFor(node, text, errors) {
		checkExpression(node.
		for || '', text, errors);
		checkIdentifier(node.alias, 'v-for alias', text, errors);
		checkIdentifier(node.iterator1, 'v-for iterator', text, errors);
		checkIdentifier(node.iterator2, 'v-for iterator', text, errors);
	}

	function checkIdentifier(ident, type, text, errors) {
		if (typeof ident === 'string' && !identRE.test(ident)) {
			errors.push(("invalid " + type + " \"" + ident + "\" in expression: " + (text.trim())));
		}
	}

	function checkExpression(exp, text, errors) {
		try {
			new Function(("return " + exp));
		} catch(e) {
			var keywordMatch = exp.replace(stripStringRE, '').match(prohibitedKeywordRE);
			if (keywordMatch) {
				errors.push("avoid using JavaScript keyword as property name: " + "\"" + (keywordMatch[0]) + "\" in expression " + (text.trim()));
			} else {
				errors.push(("invalid expression: " + (text.trim())));
			}
		}
	}

	/*  */

	function createFunction(code, errors) {
		try {
			return new Function(code)
		} catch(err) {
			errors.push({
				err: err,
				code: code
			});
			return noop
		}
	}

	function createCompileToFunctionFn(compile) {
		var cache = Object.create(null);

		return function compileToFunctions(template, options, vm) {
			options = options || {};

			/* istanbul ignore if */
			{
				// detect possible CSP restriction
				try {
					new Function('return 1');
				} catch(e) {
					if (e.toString().match(/unsafe-eval|CSP/)) {
						warn('It seems you are using the standalone build of Vue.js in an ' + 'environment with Content Security Policy that prohibits unsafe-eval. ' + 'The template compiler cannot work in this environment. Consider ' + 'relaxing the policy to allow unsafe-eval or pre-compiling your ' + 'templates into render functions.');
					}
				}
			}

			// check cache
			var key = options.delimiters ? String(options.delimiters) + template: template;
			if (cache[key]) {
				return cache[key]
			}

			// compile
			var compiled = compile(template, options);

			// check compilation errors/tips
			{
				if (compiled.errors && compiled.errors.length) {
					warn("Error compiling template:\n\n" + template + "\n\n" + compiled.errors.map(function(e) {
						return ("- " + e);
					}).join('\n') + '\n', vm);
				}
				if (compiled.tips && compiled.tips.length) {
					compiled.tips.forEach(function(msg) {
						return tip(msg, vm);
					});
				}
			}

			// turn code into functions
			var res = {};
			var fnGenErrors = [];
			res.render = createFunction(compiled.render, fnGenErrors);
			res.staticRenderFns = compiled.staticRenderFns.map(function(code) {
				return createFunction(code, fnGenErrors)
			});

			// check function generation errors.
			// this should only happen if there is a bug in the compiler itself.
			// mostly for codegen development use
			/* istanbul ignore if */
			{
				if ((!compiled.errors || !compiled.errors.length) && fnGenErrors.length) {
					warn("Failed to generate render function:\n\n" + fnGenErrors.map(function(ref) {
						var err = ref.err;
						var code = ref.code;

						return ((err.toString()) + " in\n\n" + code + "\n");
					}).join('\n'), vm);
				}
			}

			return (cache[key] = res)
		}
	}

	/*  */

	function createCompilerCreator(baseCompile) {
		return function createCompiler(baseOptions) {
			function compile(template, options) {
				var finalOptions = Object.create(baseOptions);
				var errors = [];
				var tips = [];
				finalOptions.warn = function(msg, tip) { (tip ? tips: errors).push(msg);
				};

				if (options) {
					// merge custom modules
					if (options.modules) {
						finalOptions.modules = (baseOptions.modules || []).concat(options.modules);
					}
					// merge custom directives
					if (options.directives) {
						finalOptions.directives = extend(Object.create(baseOptions.directives), options.directives);
					}
					// copy other options
					for (var key in options) {
						if (key !== 'modules' && key !== 'directives') {
							finalOptions[key] = options[key];
						}
					}
				}

				var compiled = baseCompile(template, finalOptions); {
					errors.push.apply(errors, detectErrors(compiled.ast));
				}
				compiled.errors = errors;
				compiled.tips = tips;
				return compiled
			}

			return {
				compile: compile,
				compileToFunctions: createCompileToFunctionFn(compile)
			}
		}
	}

	/*  */

	// `createCompilerCreator` allows creating compilers that use alternative
	// parser/optimizer/codegen, e.g the SSR optimizing compiler.
	// Here we just export a default compiler using the default parts.
	var createCompiler = createCompilerCreator(function baseCompile(template, options) {
		var ast = parse(template.trim(), options);
		optimize(ast, options);
		var code = generate(ast, options);
		return {
			ast: ast,
			render: code.render,
			staticRenderFns: code.staticRenderFns
		}
	});

	/*  */

	var ref$1 = createCompiler(baseOptions);
	var compileToFunctions = ref$1.compileToFunctions;

	/*  */

	var idToTemplate = cached(function(id) {
		var el = query(id);
		return el && el.innerHTML
	});

	var mount = Vue$3.prototype.$mount; Vue$3.prototype.$mount = function(el, hydrating) {
		el = el && query(el);

		/* istanbul ignore if */
		if (el === document.body || el === document.documentElement) {
			"development" !== 'production' && warn("Do not mount Vue to <html> or <body> - mount to normal elements instead.");
			return this
		}

		var options = this.$options;
		// resolve template/el and convert to render function
		if (!options.render) {
			var template = options.template;
			if (template) {
				if (typeof template === 'string') {
					if (template.charAt(0) === '#') {
						template = idToTemplate(template);
						/* istanbul ignore if */
						if ("development" !== 'production' && !template) {
							warn(("Template element not found or is empty: " + (options.template)), this);
						}
					}
				} else if (template.nodeType) {
					template = template.innerHTML;
				} else {
					{
						warn('invalid template option:' + template, this);
					}
					return this
				}
			} else if (el) {
				template = getOuterHTML(el);
			}
			if (template) {
				/* istanbul ignore if */
				if ("development" !== 'production' && config.performance && mark) {
					mark('compile');
				}

				var ref = compileToFunctions(template, {
					shouldDecodeNewlines: shouldDecodeNewlines,
					delimiters: options.delimiters,
					comments: options.comments
				},
				this);
				var render = ref.render;
				var staticRenderFns = ref.staticRenderFns;
				options.render = render;
				options.staticRenderFns = staticRenderFns;

				/* istanbul ignore if */
				if ("development" !== 'production' && config.performance && mark) {
					mark('compile end');
					measure(((this._name) + " compile"), 'compile', 'compile end');
				}
			}
		}
		return mount.call(this, el, hydrating)
	};

	/**
 * Get outerHTML of elements, taking care
 * of SVG elements in IE as well.
 */
	function getOuterHTML(el) {
		if (el.outerHTML) {
			return el.outerHTML
		} else {
			var container = document.createElement('div');
			container.appendChild(el.cloneNode(true));
			return container.innerHTML
		}
	}

	Vue$3.compile = compileToFunctions;

	return Vue$3;

})));